DESC:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10, rule 13)
“A method for processing raw video for range ambiguity correction in radar”
By
BHARAT ELECTRONICS LIMITED
Nationality: Indian
Address: OUTER RING ROAD, NAGAVARA, BANGALORE- 560045,
KARNATAKA, INDIA

The following specification particularly describes the invention and the manner in which it is to be performed.

Field of the invention
The present invention mainly relates to Radar and Sonar Processing system and more particularly to Radar and Sonar processing method and system where the representation of raw video on display is essential for targets whose range is ambiguous.
Background of the invention
Generally, both radar and sonar locate objects from the echo of a signal that is bounced off the object. Radar uses radio waves, which are a type of electromagnetic energy and Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy.
For the ambiguous range of return for Radar (operating in Medium Pulse Repeating Frequency) the raw return signal from a reflection will appear to be arriving from a distance less than the true range of the reflection. To find the true range, the radar must measure the apparent range using two or more different Pulse Repeating Frequency. The general constraints for range performance (in ambiguous range) are that detection made in each Pulse Repeating Frequency combination has to be combined to identify the true range.
General raw video processor (Such as raw video processor used in surveillance radar), process each sample (of each Pulse Repeating Frequency) to determine if there is a return from target of interest and send it to display for each Pulse Repeating Frequency. It does not have capability to combine two or more different pulse repeating frequencies returns and resolve the range ambiguity (if exist). So when a target is ambiguous in range for a Radar then raw video may display the same target at different range for different Pulse Repeating Frequencies.
Therefore there is a need in the art with method to resolve the range ambiguity present in target for raw video and to solve the above mentioned limitations.
Objective of the invention
The main objective of the present invention is to resolve the range ambiguity present in target for raw video and display the target at corrected range using range ambiguity resolving method used in processed video application.
Another objective of the present invention relates to a raw video generation for Radar and Sonar in which range information of target is contaminated by second trip echoes.
Novelty of the invention
The present invention method enables the developer to develop a raw video Processor which can generate the raw video even when target range is ambiguous to Radar, i.e. it corrects the range ambiguity present in returns and places the returns strength (unprocessed) at unambiguous range.
The present methodology aims to resolve the range ambiguity for raw video using range ambiguity resolving method used in processed video. The method is very expedient because of its simplicity and ease of implementation both in software and hardware.
Summary of the Invention
An aspect of the present invention is to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below.
According, in one aspect of the present invention relates to a method for processing raw video for range ambiguity correction in a radar, the method comprising: receiving, a plurality of data including target detection for each set of pulse repeating frequency transmitted, by a processor, generating at least one report by a Field Programmable Gate Array (FPGA) for each detected target burst/dwell identification, detected range and unambiguous range of target, calculating the magnitude of each range for each pulse repeating frequency signal and norms it over the burst/dwell, the magnitude value of each range bin for each burst/dwell is stored in a memory, analysing, if the detected and unambiguous target range information for a particular burst is not equal, to read the magnitude value for the particular burst, mapping the read magnitude value to the corresponding unambiguous range position and retrieving the combined information from the analysed and mapped value to get the raw video with range ambiguity correction.
Another aspect of the present invention relates to a raw video processor for processing raw video for range ambiguity mode, the processor comprising: a Field Programmable Gate Array to generate a target report for each detected target containing Burst/Dwell identification, detected range and unambiguous range of target, a 16 bit Digital to Analog Converter to convert digitized video into analog video, a memory to store raw video information for each Burst/Dwell, a high speed serial interface connector to receive base band data (In phase & Quadrature phase) from digital down converter.
Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.
Brief description of the drawings
The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:
Figure 1 shows a simplified Block Diagram of Raw Video Processor indicating major element and its interconnections according to one embodiment of the present invention.
Figure 2 shows a method to find the unambiguous range of returns for raw video according to one embodiment of the present invention.
Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.
Detailed description of the invention
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.
By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic is intended to provide.
Figs. 1 through 2, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way that would limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged communications system. The terms used to describe various embodiments are exemplary. It should be understood that these are provided to merely aid the understanding of the description, and that their use and definitions, in no way limit the scope of the invention. Terms first, second, and the like are used to differentiate between objects having the same terminology and are in no way intended to represent a chronological order, unless where explicitly stated otherwise. A set is defined as a non-empty set including at least one element.
The present invention uses the unambiguous range information present in the plot report of the target (for the processed video) and maps the raw video at correct range in order to resolve range ambiguity of targets for raw video. Based on return strength (from unprocessed channel) and target actual and unambiguous position (From plot report) video signal is generated which will be having unprocessed target information but at range resolved position. The method used to extract the actual target range information from ambiguous range of target for raw video consists of mainly six modules: Target Report generator, Magnitude calculator, Memory controller, PRT generator, Target mapper and Target signature mapper. In addition, a system is provided for generating plot report also (if unavailable as input to raw video processor) from In Phase and Quadrature phase samples coming from the digital down converter.
The present invention Radar and Sonar processing system and more particularly to Radar and Sonar processing system used to process raw (unprocessed) video for range ambiguity mode of Radar using a two-step methodology. A Target plot report (consisting of actual target position and unambiguous target position) is used to locate the unambiguous position of a return (in unprocessed data) which is cross referenced with unprocessed returns. Based on return strength (from unprocessed channel) and target actual and unambiguous position (From plot report) video signal is generated which will be having unprocessed target information but at range resolved position. The Field Programmable Gate Array resource requirement for the proposed video processor is very minimal and it can also be used for normal (without range ambiguity) mode of operations of Radars.
Figure 1 shows a simplified Block Diagram of Raw Video Processor indicating major element and its interconnections according to one embodiment of the present invention.
The figure a shows a block diagram of raw video processor indicating major element and its interconnections. The present invention relates to an improvement in video processor which effectively processes the raw video even if returns range is ambiguous. With the conventional techniques (used in different Radars such as surveillance Radar, tracking Radar etc.) video processor process each returns (of every Pulse Repeating Frequency) and send it to display. But when returns range is ambiguous then it is impossible to find true target range using one Pulse Repeating Frequency, hence for this kind of returns, same returns may be displayed at different range on display for the different Pulse Repeating Frequencies.
Major Elements used in the present invention raw video processor is High speed serial connector 1, Field Programmable Gate Array 2, Digital to Analog converter 6, Synchronous Random Access Memory 9, general purpose connector 3, RJ45 connector 7 for local Area Network interface and DC-DC converters 10. General block diagram of system is shown in FIG 1. In the block diagram In phase and Quadrature phase processed data from digital down converter is received to the video processor through high speed serial interface ( due to high data rate of In phase and Quadrature phase data) and Field Programmable Gate Array 8 is used to implement the required method ( as shown in FIG 2) for raw video processor. External Synchronous Random Access Memory 9 is used to store all required data for the processing, local Area Network interface is used to get the Radar controls information, general purpose connector is used to receive timing signals and Digital to Analog converter 6 is used to convert digital video into analog video.
The input to raw video processor is In phase and Quadrature phase processed data from digital down converter and is received through High Speed Connector (due to high data rate of In phase and Quadrature phase data high speed serial interface is required) and FPGA 8 (Field Programmable Gate Array) is used to implement the proposed method for raw video processor as shown in Figure 2. SMA 1 connector is used to receive the reference clock for the raw video processor to make it synchronous with other subsystems of Radar. General Purpose Connector 3 is used to receive the all the reference signals (Burst, Dwell, Pulse Repeating frequency signal) required for the raw video processor. JTAG 4 connector is used for debugging and flashing the FPGA 8 (Field Programmable Gate Array). Reset 5 is used to reset the operation of raw video processor as and when required. The DAC 6 (Digital to Analog converter) is used to convert digital video into analog video. The raw video processor operation can be configured using control word through local area network interface. For this purpose RJ 45 connector 7 is used. External SRAM 9 (Synchronous Random Access Memory) is used to store all required data (i.e. no of range bin in a prf signal* no of prf signal in a Burst signal *no of Burst signal in a Dwell signal) for the processing. DC-DC Converters 10 and LDOs 11 are used for generation of all the voltage level required for operation of Field Programmable Gate Array, Digital to Analog converter and other Integrated Circuits of the board. VME Backplane 12 connector is used to receive +5V digital and linear supply required as a reference voltage for DC-DC Converters 10 and LDOs 11.
Figure 2 shows a method to find the unambiguous range of returns for raw video according to one embodiment of the present invention.
The figure shows the flowchart used to extract the actual target range information from ambiguous range of target for raw video. It consists of mainly six modules: Input Data 13, Magnitude Calculator 14, Target Report Generator 15, Target Signature Mapper 16, Target Mapper 17, memory controller and Unambiguous Range PRT (Pulse Repetition Time) Generator 18. Input Data 13 modules receives In phase and Quadrature phase processed data from digital down converter and pass it to Magnitude Calculator 14 and Target Report Generator 15. Target Report Generator 15 use In phase and Quadrature phase data received from digital down converter and processed it to find the target detection for each set of Pulse Repeating Frequency signal (i.e. for each Burst/Dwell signal of Radar). Based on different sets of Pulse Repeating Frequency transmitted (generally 3/4 sets of Pulse Repeating Frequency is transmitted to resolve range ambiguity), it finds the unambiguous range for each target detected. Finally this module generates a report for each detected target containing Burst/Dwell identification, detected range and unambiguous range of target.
Magnitude Calculator 14 calculates the magnitude of each range bin (for noise and return both) for each Pulse Repeating Frequency signal and averages it over the Burst/Dwell. The output data (i.e. Magnitude value of each range bin for each Burst/Dwell) from Magnitude Calculator 14 module are stored to the external Synchronous Random Access Memory. The maximum storage required to store the data is equal to no of range bin in a prf signal* no of prf signal in a Burst signal *no of Burst signal in a Dwell signal.
Memory controller module controls the storage of output data from Magnitude Calculator to the external Synchronous Random Access Memory. This modules store the magnitude value of each range bin for each Burst/Dwell. The maximum storage required to store the data is equal to no of range bin*no of Burst/Dwell (for different Pulse Repeating Frequency sets used to resolve range ambiguity).
Unambiguous Range PRT (Pulse Repetition Time) Generator 18 module generates the Pulse Repetition Time (PRT) signal equivalent to maximum range of Radar. This Pulse Repetition Time signal is also used as a reference signal to display.
Target Mapper 17 module map the strength of target (from external Synchronous Random Access memory) based on the information provided in Target Report Generator 15. This module first gets the detected and unambiguous target range information for a particular burst from target report. If both are not same then it goes to external memory and read the magnitude value stored for that particular burst at detected range and place this magnitude value at unambiguous range position but if detected range and unambiguous range is same then target magnitude will be placed at original position only. This process is repeated for each Burst/Dwell catering to different Pulse Repeating Frequency set.
Target Signature Mapper 16 module maps the signature (i.e. target effect at nearby range cells) of target (from external Synchronous Random Access Memory) based on the information provided in Target Report Generator 15. This module first gets the detected and unambiguous target range information for a particular burst from target report. If detected range and unambiguous range is not same then it goes to external memory and read the magnitude value stored for that particular burst at detected range for an operator selectable range bin window to get the signature of target and place these magnitude value at the corresponding unambiguous range position and if detected range and unambiguous range is same then target magnitude will be placed at original position only. This process is repeated for each Burst/Dwell catering to different Pulse Repeating Frequency set. This module also fills all remaining range bins (other than Target) for each Burst/Dwell with corresponding magnitude value stored in External memory.
Finally output from Target Mapper 17 module and Target Signature Mapper 16 module is combined (by arranging data from Target Mapper 17 module and Target Signature Mapper 16 module as per their range information) to get the raw video with range ambiguity resolved. This digitized raw video is fed to Digital to Analog converter to get the analog video for display.
In one embodiment of the present invention relates to a method for processing raw video for range ambiguity correction in radar, the method comprising: receiving, a plurality of data including target detection for each set of pulse repeating frequency transmitted, by a processor, generating at least one report by a Field Programmable Gate Array (FPGA) for each detected target burst/dwell identification, detected range and unambiguous range of target, calculating the magnitude of each range for each pulse repeating frequency signal and norms it over the burst/dwell, the magnitude value of each range bin for each burst/dwell is stored in a memory, analysing, if the detected and unambiguous target range information for a particular burst is not equal, to read the magnitude value for the particular burst, mapping the read magnitude value to the corresponding unambiguous range position and retrieving the combined information from the analysed and mapped value to get the raw video with range ambiguity correction.
The method for processing raw video for range ambiguity correction in radar further comprises of generating a reference signal, wherein the reference signal is a Pulse Repetition Time (PRT) signal equivalent to maximum range of the radar.
The step of analysing including, if both (detected range and unambiguous range) are not same, module goes to external memory and read the magnitude value stored for that particular burst at detected range and place this magnitude value at unambiguous range position. The step of mapping including reading the magnitude value stored for that particular burst at detected range for an operator selectable range bin window to get the signature of target and place the magnitude value at the corresponding unambiguous range position. The retrieved processed digitized raw video is fed to Digital to Analog converter to get the analog video for display.
Another embodiment of the present invention relates to a raw video processor for processing raw video for range ambiguity mode is composed mainly of: a.) A Field Programmable Gate Array for implementing all the required modules for generation of raw video in range ambiguous mode. b.) A 16 bit Digital to Analog Converter to convert digitized video into analog video. c.) Two Synchronous Random Access memory is used to store raw video information for each Burst/Dwell. d.) High speed serial interface connector to receive base band data (In phase and Quadrature phase) from digital down converter. The Field Programmable Gate Array is used to generates target report for each detected target containing Burst/Dwell identification, detected range and unambiguous range of target. The Field Programmable Gate Array generates required target report from base band data using Moving Target Indicator, Fast Fourier Transform, Constant False Alarm Rate and range ambiguity resolving techniques.
The Field Programmable Gate Array is also used to generate Pulse Repetition Time equivalent to maximum range of Radar, which is used by display as a reference signal to accurately represent the range of target. The Field Programmable Gate Array is also used to correlate initial raw video output (containing ambiguous/unambiguous range of target) and target plot report to generate final raw video, which contains actual range of target. The Field Programmable Gate Array generates final digitized raw video with actual target range using target mapper and target signature mapper module for each burst/dwell. This raw video is stored to internal memory of Field Programmable Gate Array and read every Pulse Repeating Frequency for sending to Digital to Analog Converter.
The width of target signature for “Target Signature mapper” module is operator controlled. The target signature width can be set to zero by operator for point target. The Field Programmable Gate Array is also used to synchronize the generation of raw video with Radar timings signals and controls received from Radar Controllers (through 1Gbps local Area Network interface).
The raw video processor can be used to generate synthetic video (Processed video using detection algorithm based on Moving Target Indicator and Constant False Alarm Rate) also from target plot report based on operator selection of type of video.
Those skilled in this technology can make various alterations and modifications without departing from the scope and spirit of the invention. Therefore, the scope of the invention shall be defined and protected by the following claims and their equivalents.
FIGS. 1-2 are merely representational and are not drawn to scale. Certain portions thereof may be exaggerated, while others may be minimized. FIGS. 1-2 illustrate various embodiments of the invention that can be understood and appropriately carried out by those of ordinary skill in the art.
In the foregoing detailed description of embodiments of the invention, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description of embodiments of the invention, with each claim standing on its own as a separate embodiment.
It is understood that the above description is intended to be illustrative, and not restrictive. It is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined in the appended claims. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein,” respectively.

We Claim:

1. A method for processing raw video for range ambiguity correction in radar, the method comprising:
receiving, a plurality of data including target detection for each set of pulse repeating frequency transmitted, by a processor;
generating at least one report by a Field Programmable Gate Array (FPGA) for each detected target burst/dwell identification, detected range and unambiguous range of target;
calculating the magnitude of each range for each pulse repeating frequency signal and norms it over the burst/dwell, the magnitude value of each range bin for each burst/dwell is stored in a memory;
analysing, if the detected and unambiguous target range information for a particular burst is not equal, to read the magnitude value for the particular burst;
mapping the read magnitude value to the corresponding unambiguous range position; and
retrieving the combined information from the analysed and mapped value to get the raw video with range ambiguity correction.

2. The method as claimed in claim 1, further comprising:
generating a reference signal, wherein the reference signal is a Pulse Repetition Time (PRT) signal equivalent to maximum range of the radar.

3. The method as claimed in claim 1, wherein the step of analysing including, if both (detected range and unambiguous range) are not same, module goes to external memory and read the magnitude value stored for that particular burst at detected range and place this magnitude value at unambiguous range position.

4. The method as claimed in claim 1, wherein the step of mapping including reading the magnitude value stored for that particular burst at detected range for an operator selectable range bin window to get the signature of target and place the magnitude value at the corresponding unambiguous range position.

5. The method as claimed in claim 1, wherein the retrieved processed digitized raw video is fed to Digital to Analog converter to get the analog video for display.

6. A raw video processor for processing raw video for range ambiguity mode, the processor comprising:
a Field Programmable Gate Array to generate a target report for each detected target containing Burst/Dwell identification, detected range and unambiguous range of target;
a 16 bit Digital to Analog Converter to convert digitized video into analog video;
a memory to store raw video information for each Burst/Dwell;
a high speed serial interface connector to receive base band data (In phase & Quadrature phase) from digital down converter.

7. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array configured to generate required target report from base band data using Moving Target Indicator, Fast Fourier Transform, Constant False Alarm Rate and range ambiguity resolving techniques.

8. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array is also configured to generate Pulse Repetition Time equivalent to maximum range of Radar, which is used by display as a reference signal to accurately represent the range of target.

9. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array is also configured to co-relate initial raw video output (containing ambiguous/ unambiguous range of target) and target plot report to generate final raw video, which contains actual range of target, and wherein the Field Programmable Gate Array generate final digitized raw video with actual target range using target mapper and target signature mapper module for each burst/dwell, the raw video is stored to internal memory of Field Programmable Gate Array and read every Pulse Repeating Frequency for sending to Digital to Analog Converter.

10. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array is also configured to synchronize the generation of raw video with Radar timings signals & controls received from Radar Controllers(through 1Gbps local Area Network interface).

ABSTRACT
The present invention mainly relates to Radar and Sonar Processing method and system and more particularly to method for processing raw video for range ambiguity correction in radar. In one embodiment, the method comprising: receiving, a plurality of data including target detection for each set of pulse repeating frequency transmitted, by a processor, generating at least one report by a Field Programmable Gate Array (FPGA) for each detected target burst/dwell identification, detected range and unambiguous range of target, calculating the magnitude of each range for each pulse repeating frequency signal and norms it over the burst/dwell, the magnitude value of each range bin for each burst/dwell is stored in a memory, analysing, if the detected and unambiguous target range information for a particular burst is not equal, to read the magnitude value for the particular burst, mapping the read magnitude value to the corresponding unambiguous range position and retrieving the combined information from the analysed and mapped value to get the raw video with range ambiguity correction.
Figure 2 (for publication)

,CLAIMS:We Claim:

1. A method for processing raw video for range ambiguity correction in radar, the method comprising:
receiving, a plurality of data including target detection for each set of pulse repeating frequency transmitted, by a processor;
generating at least one report by a Field Programmable Gate Array (FPGA) for each detected target burst/dwell identification, detected range and unambiguous range of target;
calculating the magnitude of each range for each pulse repeating frequency signal and norms it over the burst/dwell, the magnitude value of each range bin for each burst/dwell is stored in a memory;
analysing, if the detected and unambiguous target range information for a particular burst is not equal, to read the magnitude value for the particular burst;
mapping the read magnitude value to the corresponding unambiguous range position; and
retrieving the combined information from the analysed and mapped value to get the raw video with range ambiguity correction.

2. The method as claimed in claim 1, further comprising:
generating a reference signal, wherein the reference signal is a Pulse Repetition Time (PRT) signal equivalent to maximum range of the radar.

3. The method as claimed in claim 1, wherein the step of analysing including, if both (detected range and unambiguous range) are not same, module goes to external memory and read the magnitude value stored for that particular burst at detected range and place this magnitude value at unambiguous range position.

4. The method as claimed in claim 1, wherein the step of mapping including reading the magnitude value stored for that particular burst at detected range for an operator selectable range bin window to get the signature of target and place the magnitude value at the corresponding unambiguous range position.

5. The method as claimed in claim 1, wherein the retrieved processed digitized raw video is fed to Digital to Analog converter to get the analog video for display.

6. A raw video processor for processing raw video for range ambiguity mode, the processor comprising:
a Field Programmable Gate Array to generate a target report for each detected target containing Burst/Dwell identification, detected range and unambiguous range of target;
a 16 bit Digital to Analog Converter to convert digitized video into analog video;
a memory to store raw video information for each Burst/Dwell;
a high speed serial interface connector to receive base band data (In phase & Quadrature phase) from digital down converter.

7. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array configured to generate required target report from base band data using Moving Target Indicator, Fast Fourier Transform, Constant False Alarm Rate and range ambiguity resolving techniques.

8. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array is also configured to generate Pulse Repetition Time equivalent to maximum range of Radar, which is used by display as a reference signal to accurately represent the range of target.

9. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array is also configured to co-relate initial raw video output (containing ambiguous/ unambiguous range of target) and target plot report to generate final raw video, which contains actual range of target, and wherein the Field Programmable Gate Array generate final digitized raw video with actual target range using target mapper and target signature mapper module for each burst/dwell, the raw video is stored to internal memory of Field Programmable Gate Array and read every Pulse Repeating Frequency for sending to Digital to Analog Converter.

10. The raw video processor, as in claim 6, wherein the Field Programmable Gate Array is also configured to synchronize the generation of raw video with Radar timings signals & controls received from Radar Controllers(through 1Gbps local Area Network interface).