Claims:1. An integrated signal processor (100) for surveillance radar system, said integrated signal processor comprising:
a programmable device (118) configured to process radar air target detection and weather estimation, the programmable device comprising:
an air detection processing module (108-1) to extract radar air target information from intermediate frequency (IF) signal received from a first channel; and
a weather estimation processing module (108-2) to estimate the precipitation for weather from intermediate frequency (IF) signal received from a second channel;
a dual channel analog to digital converter (ADC) (112-1, 112-2) coupled to the programmable device (118) to digitize the incoming intermediate frequency signals and provides status for redundant configuration;
one or more local area network (LANs) connectors (116-1 to 116-3) coupled to the programmable device (118) for state transfer of the signal processor in standby redundancy configuration;
a clock conditioner (122) coupled to the programmable device (118) to generate sampling clock of the ADCs from the reference clock with dynamic configurations; and
a report module (110) generates the radar detection report and weather estimation report, wherein the one or more local area network connectors send detection reports and weather estimation report to other subsystems of the radar for post-processing.
2. The integrated signal processor as claimed in claim 1, the first channel is a radar air target detection channel and the second channel is a weather processing channel.
3. The integrated signal processor as claimed in claim 1, said one or more local area network connectors (106-1 to 106-3) comprises a first LAN connector (106-1), a second LAN connector (106-2) and a third LAN connector (106-3), wherein the third LAN connector communicates necessary data to redundant signal processor so that in case of failure, the standby integrated signal processor takes over processing load of the system without affecting the performance, the integrated signal processor is provided with inbuilt dual redundancy configuration.
4. The integrated signal processor as claimed in claim 1, wherein the air detection processing module (108-1) calculates signal to clutter ratio to minimize the processing loss by at least 5 dB in clear air region without increasing false alarms.
5. The integrated signal processor as claimed in claim 1, wherein the air detection processing module (108-1) calculates dynamic threshold to detect tangential targets for radar in the presence of clutter.
6. The integrated signal processor as claimed in claim 1, wherein the signal to clutter ratio and dynamic threshold are built to raise the appropriate flag and select appropriate threshold based on the environmental conditions.
7. The integrated signal processor as claimed in claim 1, wherein the weather estimation processing module (108-2) comprises a clutter filter module (220) to reduce the effect of non-meteorological radar returns by at least 50dB for better weather estimation.
8. The integrated signal processor as claimed in claim 1, wherein the weather estimation processing module (108-2) estimates the reflectivity level of weather for complete radar range and coverage without affecting performance of the radar air target detection.
9. A method (300) for processing using an integrated signal processor for surveillance radar system, said method comprising:
processing (302), by a programmable device (118), radar air target detection and weather estimation, the programmable device comprising an air detection processing module (108-1) to extract radar air target information from intermediate frequency (IF) signal received from a first channel and a weather estimation processing module (108-2) to estimate the precipitation for weather from intermediate frequency (IF) signal received from a second channel;
converting (304), by a dual channel analog to digital converter (ADC) (112-1, 112-2) coupled to the programmable device (118), the incoming intermediate frequency signals to digital form and provide status for redundant configuration;
performing (306), by one or more local area network (LANs) connectors (116-1 to 116-3) coupled to the programmable device (118), state transfer of the signal processor in standby redundancy configuration;
generating (308), by a clock conditioner (122) coupled to the programmable device (118), sampling clock of the ADCs from the reference clock with dynamic configurations; and
generating (310), by a report module (110), the radar detection report and weather estimation report, wherein the one or more local area network connectors send detection reports and weather estimation report to other subsystems of the radar for post-processing.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates, in general, to radar system, and more specifically, relates to an integrated signal processor with dual redundant configuration for a surveillance radar system.

BACKGROUND
[0002] The surveillance radar system are high technology sensor systems that monitor activity surrounding or on critical infrastructure areas such as airports, military installations, borders, refineries and other critical industries. An example of surveillance radar system is recited in a patent US8072368 B, entitled “pulse pattern for weather phenomenon and incursion detection system and method”. The patent discloses an aircraft radar system includes a radar antenna and a processing device. The processing device receives returns from the radar antenna associated with the scan. The processing device uses the returns from the scan for use in both incursion detection and weather phenomenon detection.
[0003] Another example of surveillance radar system is recited in a patent CN102928821A, entitled “multifunctional radar signal processing plate”. The patent provides a multi-functional radar signal processing plate which comprises a power module, two digital signal processor (DSP) processing nodes, two field programmable gate array (FPGA) processing nodes, two complex programmable logic device (CPLD) modules, three high-speed analog to digital converter (ADC) modules, a high-speed digital to analog converter (DAC) module, a low-voltage differential signalling (LVDS) data collecting output module, two low-speed ADC modules, two low-speed DAC modules and two separated synchronous serial modules. The processing plate is achieved by adopting a high-performance DSP and a Xilinx high-performance FPGA and has the advantages of being good in processing capacity and high in integration of chips with various functions and the like.
[0004] The paper titled “Programmable Radar Signal Processor for Multifunction Radar” relates to a programmable radar signal processor caters for a multi-function radar performing the major functions of target surveillance and track. This paper describes a high-performance multiprocessor DSP based solution for a real time radar signal processing application. A parallel DSP system that can run radar signal processing algorithms in real time, is made available whose computing power can be harnessed through specific software tools developed for the application. This scheme has been successfully implemented for a multi-function phased array radar which can detect and track high speed and low RCS targets with high gain and accuracy.
[0005] Yet another paper titled “multifunction phased-array radar for weather surveillance presents the technical and signal processing capabilities of the NWRT PAR, evolutionary scanning strategy developments that suit this unique instrument, and results from PARISE that have led to the advancement of a SPY-1A antenna from military-surveillance radar to a weather-surveillance radar with unique capabilities. Individual weather events sampled by the NWRT PAR will be used at the conference to illustrate the advantages of the high-temporal sampling capabilities provided by adaptive scanning.
[0006] Although multiple system exists today, these systems suffer from limitations that require complex, costly hardware and require more power. The system does not estimate threshold to adopt the environmental conditions for improved radar target detection in presence of clutter. The system cannot change the radar target detection criteria based on location of radar to minimise processing loss and improved radar target detection for low signal to noise returns.
[0007] Therefore, it is desired to develop a compact, efficient and integrated means that processes air radar target detection and weather estimation for surveillance radar.

OBJECTS OF THE PRESENT DISCLOSURE
[0008] An object of the present disclosure relates, in general, to radar system, and more specifically, relates to an integrated signal processor with dual redundant configuration for a surveillance radar system.
[0009] Another object of the present disclosure is to provide an integrated signal processor that processes air radar target detection and weather estimation for surveillance radar.
[0010] Another object of the present disclosure is to provides compact and integrated signal processor with dynamic threshold to adopt the environmental conditions for improved radar target detection in presence of clutter.
[0011] Another object of the present disclosure is to provide an integrated signal processor that is provided with signal to clutter ratio to change the radar target detection criteria based on location of radar to minimise processing loss and improved radar target detection for low signal to noise returns.
[0012] Another object of the present disclosure is to provide an integrated signal processor that enables multifunctional capabilities on single hardware, improves overall reliability of the system, reduces maintainability requirements, improves flexibility in system architecture, ease manufacturing and reduces cost and power requirements.
[0013] Another object of the present disclosure is to provide an integrated signal processor that is built with static and dynamic maps, to uniquely separate radar targets from clutter and improve the probability of detection of radar targets
[0014] Yet another object of the present disclosure is to provide an integrated signal processor that minimizes the complexity of surveillance radar configuration by integrating digital down conversion processing with multichannel signal processor.

SUMMARY
[0015] The present disclosure relates, in general, to radar system, and more specifically, relates to an integrated signal processor with dual redundant configuration for a surveillance radar.
[0016] Existing systems require complex and costly hardware, the system does not estimate threshold to adopt the environmental conditions for improved radar target detection in presence of clutter. The existing system cannot change the radar target detection criteria based on the location of radar to minimise processing loss and improved radar target detection for low signal to noise returns. The main objective of the present disclosure is to solve the technical problem as recited above by providing a unique signal processor for surveillance radar, which is designed for two parallel channel processing on single hardware to cater air radar target detection as well as weather precipitation estimation processing. The signal processor is built with a unique dual-redundant configuration to cater high availability operational requirements of surveillance radar. The multifunctional capabilities of a signal processor built on single hardware, improve the overall reliability of the system, reduce maintainability requirements, improve flexibility in system architecture, ease manufacturing and reduces cost and power requirements. The signal processor is built with static and dynamic maps, to uniquely separate radar targets from clutter and improve the probability of detection of radar targets.
[0017] The present disclosure aims at providing the integrated signal processor with inbuilt dual redundancy configuration and processing of air radar target detection as well as weather estimation for the surveillance radar. The present disclosure provides compact and integrated system with dynamic threshold to adopt the environmental conditions for improved radar target detection in presence of clutter. It provides compact and integrated processor with signal to clutter ratio to change the radar target detection criteria based on location of radar to minimise processing loss and improved radar target detection for low signal to noise returns, where minimum detectable signal (MDS) detection improvement by at least 5dB. This approach can minimize the complexity of surveillance radar configuration by integrating digital down conversion processing with multichannel signal processor.
[0018] In an aspect, the present disclosure relates to an integrated signal processor for surveillance radar, the integrated signal processor comprising a programmable device configured to process radar air target detection and weather estimation, the programmable device comprising an air detection processing module to extract radar air target information from intermediate frequency (IF) signal received from a first channel, a weather estimation processing module to estimate the precipitation for weather from intermediate frequency (IF) signal received from a second channel. A dual channel analog to digital converter (ADC) coupled to the programmable device to digitize the incoming intermediate frequency signals and provides status for redundant configuration. One or more local area network connectors coupled to the programmable device for signal processor state transfer in standby redundancy configuration and to implement the required communication with other subsystems of radar. A clock conditioner coupled to the programmable device to generate sampling clock of the ADCs from the reference clock with dynamic configurations and a report module generates the radar detection report and weather estimation report.
[0019] According to an embodiment, the first channel is a radar air target detection channel and the second channel is a weather processing channel.
[0020] According to an embodiment, one or more local area network connectors can include a first LAN connector, a second LAN connector and a third LAN connector, where the third LAN connector communicates necessary data to the redundant signal processor so that in case of failure, the standby integrated signal processor takes over processing load of the system without affecting the performance. The integrated signal processor is provided with inbuilt dual redundancy configuration.
[0021] According to an embodiment, the air detection processing module calculates signal to clutter ratio to minimize the processing loss by at least 5 dB in clear air region without increasing the false alarms.
[0022] According to an embodiment, the air detection processing module calculates dynamic threshold to detect tangential targets for radar in the presence of clutter.
[0023] According to an embodiment, the signal to clutter ratio and dynamic threshold are built to raise the appropriate flag and select appropriate threshold based on the environmental conditions.
[0024] According to an embodiment, the weather estimation processing module comprises an adaptive clutter filter to reduce the effect of non-meteorological radar returns by at least 50dB for better weather estimation.
[0025] According to an embodiment, the weather estimation processing module estimates the reflectivity level of weather for complete radar range and coverage without affecting performance of the radar air target detection.
[0026] According to an embodiment, clutter filter module filters in-phase (I) and quadrature phase (Q) signal to remove ground clutter associated with the weather data.
[0027] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The following drawings form part of the present specification and are included to further illustrate aspects of the present disclosure. The disclosure may be better understood by reference to the drawings in combination with the detailed description of the specific embodiments presented herein.
[0029] FIG. 1A illustrates an exemplary functional component of multifunctional signal processor, in accordance with an embodiment of the present disclosure.
[0030] FIG. 1B is a high-level block diagram of hardware of the multifunctional signal processor, in accordance with an embodiment of the present disclosure.
[0031] FIG. 2A is a high-level framework illustrating the processing of the system in programmable device, in accordance with an embodiment of the present disclosure.
[0032] FIG. 2B illustrates a flow diagram for signal to clutter ratio, in accordance with an embodiment of the present disclosure.
[0033] FIG. 2C illustrates a flow diagram of dynamic threshold, in accordance with an embodiment of the present disclosure.
[0034] FIG. 3 illustrates a method of processing using an integrated signal processor for surveillance radar system, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0035] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[0036] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0037] The present disclosure relates, in general, to radar systems, and more specifically, relates to an integrated signal processor with dual redundant configuration for surveillance radar. The device of the present disclosure enables to overcome the limitations of the prior art by providing a unique signal processor for surveillance radar, which is designed for two parallel channel processing on single hardware to cater air radar target detection and weather precipitation estimation processing. The signal processor is also built with a unique dual-redundant configuration to cater high availability operational requirements of the surveillance radar.
[0038] The advantages achieved by the signal processor of the present disclosure can be clear from the embodiments provided herein. The multifunctional capabilities of the signal processor built on a single hardware, improve the overall reliability of the system, reduce maintainability requirements, brings a lot of flexibility in system architecture, ease manufacturing and reduce cost and power requirements. The signal processor is built with static and dynamic maps, to uniquely separate radar targets from clutter and improve the probability of detection of radar targets. The description of terms and features related to the present disclosure shall be clear from the embodiments that are illustrated and described; however, the invention is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents of the embodiments are possible within the scope of the present disclosure. Additionally, the invention can include other embodiments that are within the scope of the claims but are not described in detail with respect to the following description.
[0039] FIG. 1A illustrates an exemplary functional component of multifunctional signal processor, in accordance with an embodiment of the present disclosure.
[0040] Referring to FIG. 1A, an integrated signal processor 100 for the surveillance radar system, which is designed for two parallel channel processing on single hardware to cater air radar target detection and weather precipitation estimation processing. The integrated signal processor 100 can include baseband data generation modules (102-1, 102-2), matched filtering modules (104-1, 104-2), memory module 106, air detection processing module 108-1, weather estimation processing module 108-2 and detection/weather report module 110 (also referred to as report module 110, herein).
[0041] The intermediate frequency signal transmitted from a receiver of radar acts as input to the proposed integrated signal processor 100, where the required processing of the received signal is achieved on a programmable device 118 shown in FIG. 1B. The high-level configuration of the proposed integrated signal processor 100 shown in FIG. 1A. The received intermediate frequency (IF) signals for both the channels acts as input to the proposed integrated signal processor 100, where the channels can include a first channel and a second channel, the first channel is a radar air target detection channel and the second channel is a weather processing channel. The received intermediate frequency signals for both the channels is first converted to a baseband signal using baseband data generation modules (102-1, 102-2). The matched filtering module (104-1, 104-2) adapted to process the down-converted signal for both the channels for matched filtering to improve the signal to noise ratio of radar returns. The data is then passed to the memory module 106 to store and arrange the data in the required format. The air detection processing module 108-1 adapted to process the stored data to extract radar air target information and the weather estimation processing module 108-2 configured to process the stored data to estimate the precipitation for the weather channel.
[0042] The air detection processing module 108-1 calculates signal to clutter ratio to minimize the processing loss by at least 5 dB in clear air region without increasing the false alarms. The air detection processing module 108-1 calculates dynamic threshold to detect tangential targets for radar in the presence of clutter. The weather estimation processing module 108-2 can include an adaptive clutter filter 220 shown in FIG. 2A to reduce the effect of non-meteorological radar returns by at least 50dB for better weather estimation. The weather estimation processing module (108-2) estimates the reflectivity level of weather for complete radar range and coverage without affecting performance of the radar air target detection. Finally, the detection/weather report module 110 generate the radar detection and weather estimation report and transmit the report to the next subsystem of the radar for post-processing.
[0043] FIG. 1B is a high-level block diagram of hardware of the multifunctional signal processor, in accordance with an embodiment of the present disclosure. Referring to FIG. 1B, the multifunctional signal processer 100 can include analogue to digital converter (112-1, 112-2), static random-access memory (SRAMs) (114-1, 114-2), one or more local area network (LANs) connectors (116-1 to 116-3), programmable device 118, flash 120 and clock conditioner 122.
[0044] The analogue to digital converter (112-1, 112-2) is coupled to the programmable device 118 to digitize the incoming intermediate frequency signals and provides status for redundant configuration. The SRAMs (114-1, 114-2) are used to store the In-phase (I), quadrature-phase (Q) data of one coherent interval as well as to store signal to clutter ratio and dynamic threshold used by both processing channels. The one or more LANs can include a first LAN 116-1, a second LAN 116-2 and a third LAN 116-3, where the one or more LAN connectors (116-1 to 116-3) coupled to the programmable device (118) for signal processor state transfer in standby redundancy configuration and to implement all the required communication with other subsystems of the Radar.
[0045] In an embodiment, the first LAN 116-1 is used to send detection reports and weather estimation report to the plot extractor for further processing. The second LAN 116-2 is used to provide dual redundancy to the system and send the same report of the first LAN 116-1 to redundant plot extractor and third LAN 116-3 (also interchangeably referred to as redundant LAN 116-3, herein) is used to communicate necessary data to the redundant signal processor so that in case of failure, the standby integrated signal processor may take over processing load of the system without affecting the system performance. The worst-case switchover time maintained as 10ms.
[0046] The programmable device 118 is used to implement all the processing blocks as shown in FIG. 2A of the proposed system. The clock conditioner 122 is used to generate a sampling clock of ADCs from the reference clock and flash 120 is used to store the permanent executable file for the programmable device 118.
[0047] FIG. 2A is a high-level framework illustrating the processing of the system in programmable device, in accordance with an embodiment of the present disclosure.
[0048] The proposed system processing is implemented in the programmable device 118 is as shown in FIG. 2A. It samples the incoming IF signal using ADCs (112-1, 112-2) and convert that into In-phase "I" and quadrature phase "Q" signal using down-conversion processing unit (202-1, 202-2). The SNR of down converted signal is further improved using matched filtering implemented in digital pulse compression unit (DPC) (204-1, 204-2), where matched filter output y(n) is obtained by convolution integral between the filter’s impulse response h(n) and input signal x(n).

where K is delay.
[0049] The down conversion and matched filter processing is done for both the channels. The output data of pulse compression unit is utilized by data organizer module 206, which organized the data in 2-D table format (Range-PRF) for each coherent time of radar. The I & Q data of each channel is further processed for both the channels separately.
[0050] The air target detection processing unit 108-1 of the first channel does the signal pre-processing to identify targets from noise. It attenuates the ground clutter radar return using moving target indicator (MTI) module 208 and then convert the time domain signals into frequency domain signals using discrete Fourier transform (DFT) module 210. Threshold computation module 212 computes the base dynamic threshold value based on the strength of nearby returns.
[0051] To ensure the desired probability of detection and a constant false alarm probability in presence of angels, clutter, vehicular traffic, jamming, unintentional interference, the signal to clutter ratio 220 and dynamic threshold module 218 are built to raise the appropriate flag and select appropriate threshold based on environmental conditions. Finally, targets have to pass through detection qualifier module 214 to filter target from any unwanted pickups based on different map flags and initial target identifications. For each sector i.e., coherent time of radar, a complete detection report is generated by the detection report generator module 216, producing primitive detections that is transferred to the plot extractor for further processing.
[0052] To minimize processing loss, signal to clutter ratio is used to change the radar target detection criteria based on location of radar. The signal to clutter ratio is used for the detection criteria value to select different threshold (adaptive/fixed) value. The flow diagram is shown in FIG. 2B and described in detail below.
[0053] The weather processing unit 108-2 for second channel performs weather conditions estimation by verifying the reflectivity levels of precipitation as per the National Weather Service (NWS) standards. Its coverage extends for the full range and azimuth of radar. Weather channel works on the orthogonal output of the polarizer assembly. Both the linear and the circular polarization of antenna are available for this channel. In order to remove ground clutter associated with the weather data, provision is made to filter out the I & Q data using clutter filter module 220. The selection of clutter filter module 220 is done using filter selection module 222 based on clear day map of weather channel. The filtered data is further processed to calculate reflectivity of weather returns using pulse pair processing in base product generation module 224.
[0054] FIG. 2B illustrates a flow diagram for signal to clutter ratio, in accordance with an embodiment of the present disclosure. The flow diagram for signal to clutter ratio is shown in FIG. 2B. TLow is the fixed low threshold whose value is calculated based on radar noise. Thigh is the fixed high threshold whose value is a 3dB configurable based on requirement more than TLow. Thigh is used to normalize the false alarms generated by angles detection. Adaptive threshold is calculated from base value received from threshold computation module 212 and dynamic threshold module 218. TCens is used to remove echo signals due to ground vehicles traffic and residues due to fixed targets generating quite strong echoes. It is calculated based on TLow and radar noise level. The different selection condition is as mentioned in table 1 below.

Sl. No. Detection Criteria Value
1 Automatic Selection: Highest Among Thigh, TLow, Adaptive & TCens 00
2 Highest Among Thigh, TLow & TCens 01
3 Highest Among Thigh, TLow & Adaptive 10
4 Highest Among TCens & Adaptive 11
Table 1: Different selection condition
[0055] FIG. 2C is a high-level flow diagram of dynamic threshold, in accordance with an embodiment of the present disclosure. To adopt the environmental conditions for improved radar tangential target detection in presence of clutter, dynamic threshold is implemented. The flow diagram is shown in FIG. 2C. At block 226, the dynamic threshold module 218 contains, for each filter, an integrated output value. At block 228, perform frequency domain analysis. At block 230 scan integration is performed, which is used to generate the base threshold value at block 232 for the detection process done by detection qualifier module 214. This threshold permits the elimination of the clutter residues out from the filters, one value for zero velocity and another value for each one of the remaining filters. This module first divides radar coverage area into elementary cells having an ex-tension of 16 range bin x 1 coherent pulse interval. There are N-1 doppler maps stored in this module, of which one is dedicated to filters 0 and N-2 are dedicated to non-zero filters. The dynamic threshold for each elementary cell is calculated as follows:

where,
= Content of for nth cell, in mth scan for ith filter
= Content of for nth cell, in (m-1)th scan for ith filter
= Output of elementary cell for nth cell, in mth scan for ith filter
A, B = coefficient selected based on speed of target
N= No. of coherent pulses
[0056] The dynamic threshold generation is a continuous process and is therefore executed automatically and periodically, the periodicity of update can be operator control.
[0057] Thus, there has been described an improved system with inbuilt dual redundancy configuration and integrated processing of air radar target detection as well as weather estimation for surveillance radar. The proposed system is configurable and can be adopted for different requirements of radars.
[0058] The embodiments of the present disclosure described above provide several advantages. The present disclosure provides the integrated signal processor 100 that processes air radar target detection and weather estimation for surveillance radar. The compact and integrated signal processor 100 with dynamic threshold to adopt the environmental conditions for improved radar target detection in presence of clutter. The compact and integrated signal processor uses signal to clutter ratio to change the radar target detection criteria based on location of radar to minimise processing loss and improve radar target detection for low signal to noise returns. The present disclosure enables multifunctional capabilities on a single hardware, improves overall reliability of the system, reduces maintainability requirements, improves flexibility in system architecture, ease manufacturing and reduces cost and power requirements.
[0059] FIG. 3 illustrates a method of processing using an integrated signal processor for surveillance radar system, in accordance with an embodiment of the present disclosure.
[0060] The method 300 include a block 302, the programmable device 118 configured to process radar air target detection and weather estimation, the programmable device can include an air detection processing module 108-1 and weather estimation processing module 108-2. The air detection processing module 108-1 can extract radar air target information from intermediate frequency (IF) signal received from a first channel. The weather estimation processing module 108-2 can estimate the precipitation for weather from intermediate frequency (IF) signal received from a second channel.
[0061] At block 304, the dual channel analog to digital converter (ADC) (112-1, 112-2) coupled to the programmable device (118) to digitize the incoming intermediate frequency signals and provides status for redundant configuration. At block 306, one or more local area network (LANs) connectors (116-1 to 116-3) coupled to the programmable device 118 for state transfer of the signal processor in standby redundancy configuration.
[0062] At block 306, the clock conditioner 122 coupled to the programmable device 118 to generate sampling clock of the ADCs from the reference clock with dynamic configurations. At block 308, the report module 110 generates the radar detection report and weather estimation report, where the one or more local area network connectors send detection reports and weather estimation report to other subsystems of the radar for further processing.
[0063] It will be apparent to those skilled in the art that the integrated signal processor 100 of the disclosure may be provided using some or all of the mentioned features and components without departing from the scope of the present disclosure. While various embodiments of the present disclosure have been illustrated and described herein, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the spirit and scope of the disclosure, as described in the claims.

ADVANTAGES OF THE PRESENT DISCLOSURE
[0064] The present disclosure provides a system that processes air radar target detection and weather estimation for surveillance radar.
[0065] The present disclosure provides compact and integrated signal processor with dynamic threshold to adopt the environmental conditions for improved radar target detection in presence of clutter.
[0066] The present disclosure provides a system that is provided with signal to clutter ratio to change the radar target detection criteria based on location of radar to minimise processing loss and improved radar target detection for low signal to noise returns.
[0067] The present disclosure provides a system that enables multifunctional capabilities on a single hardware, improves overall reliability of the system, reduces maintainability requirements, improves flexibility in system architecture, ease manufacturing and reduces cost and power requirements.
[0068] The present disclosure provides a system that is built with static and dynamic maps, to uniquely separate radar targets from clutter and improve the probability of detection of radar targets.
[0069] The present disclosure provides a system that minimizes the complexity of surveillance radar configuration by integrating digital down conversion processing with multichannel signal processor.