KR940015533A - Video signal main processor of radar system - Google Patents

Video signal main processor of radar system Download PDF

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Publication number
KR940015533A
KR940015533A KR1019920024129A KR920024129A KR940015533A KR 940015533 A KR940015533 A KR 940015533A KR 1019920024129 A KR1019920024129 A KR 1019920024129A KR 920024129 A KR920024129 A KR 920024129A KR 940015533 A KR940015533 A KR 940015533A
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South Korea
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video
signal
video signal
algorithm
digital
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KR1019920024129A
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Korean (ko)
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KR950003602B1 (en
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이승철
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정용문
삼성전자 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/5246—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
    • G01S7/2927—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by deriving and controlling a threshold value

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

본 발명은 레이다 시스템의 비디오 신호 주 처리 장치에 관한 것으로, 본 발명은 디지타이져수단과 궤환 인티그레이션 및 임계디코딩으로 비디오신호에서 순수한 표적신호을 검출하는 CFAR 처리수단과 비디오 데이타와 픽셀을 동기시키는 버퍼 및 픽셀 타이밍 제어 수단을 구비한다. 본 발명에 의하면 레이다 비디오 신호에 있는 클러터와 잡음 레벨을 적절히 감쇄하여 FAR을 일정하게 유지하면서 표적신호를 검출함으로써 레이다 시스템의 표적 탐지 능력 및 추적 능력을 향상시킨다. 또한 궤환 인티그레이션과 임계디코딩에 전용 메모리를 사용함으로써 운용 환경에 적응하여 비디오 신호를 고속으로 처리할 수 있다.The present invention relates to a video signal main processing apparatus of a radar system. The present invention relates to a digitizer means and CFAR processing means for detecting a pure target signal from a video signal by feedback integration and threshold decoding, and buffer and pixel timing for synchronizing video data and pixels. Control means. According to the present invention, the clutter and noise level in the radar video signal are properly attenuated to detect the target signal while maintaining the FAR constant, thereby improving the radar system's target detection capability and tracking capability. Dedicated memory is also used for feedback integration and critical decoding, allowing video signals to be processed at high speeds.

Description

레이다 시스템의 비디오신호 주처리장치Video signal main processor of radar system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명에 의한 레이다 시스템의 비디오 신호 주 처리기를 도시한 블럭도이고, 제5도는 제4도의 디지타이져를 보다 자세히 도시한 세부 블럭도이고, 제6도는 제4도의 CFAR 처리기를 보다 자세히 도시한 세부 블럭도이다.FIG. 4 is a block diagram showing the video signal main processor of the radar system according to the present invention. FIG. 5 is a detailed block diagram showing the digitizer of FIG. 4 in detail, and FIG. 6 shows the CFAR processor of FIG. 4 in more detail. One detailed block diagram.

Claims (6)

레이다의 비디오 신호를 처리하는 장치에 있어서, 아날로그 비디오 신호를 디지탈로 변환하여 메모리에 저장하는 디지타이져수단; 상기 디지타이져로부터 출력신호를 받아 클러티와 잡음과 인터피어런스를 제거하는 알고리즘을 내장하여 순수한 표적신호를 검출하는 일정가항적발생을(CFAR) 처리수단; 상기 CFAR 처리수단의 표적신호를 입력하여 픽셀 타이밍에 따라 순차적으로 출력하여 비디오 데이타와 픽셀을 동기시키는 버퍼 및 픽셀 타이밍 제어수단을 구비한 것을 특징으로 한 레이다 시스템의 비디오 신호 주 처리 장치.An apparatus for processing a video signal of a radar, the apparatus comprising: digitizer means for converting an analog video signal into digital and storing in a memory; CFAR processing means for receiving an output signal from the digitizer and detecting a pure target signal by incorporating an algorithm for removing clutter, noise, and interference; And a buffer and pixel timing control means for inputting a target signal of the CFAR processing means and sequentially outputting the target signal according to the pixel timing to synchronize the video data with the pixel. 제1항에 있어서, 상기 디지타이져는 아날로그 신호를 디지탈 신호로 변환하는 아날로그/디지탈 변환기와 상기 아날로그/디지탈 변환기로부터 디지탈 비디오 신호를 입력하여 분배하는 비디오 분배기와 상기 비디오 분배기로부터 분배된 디지탈 비디오 신호를 적어도 둘 이상의 버퍼에 교번으로 저장하는 비디오 버퍼 메모리를 구비한 것을 특징으로 하는 레이다 시스템의 비디오신호 주처리장치.The digital divider of claim 1, wherein the digitizer comprises at least one of an analog / digital converter for converting an analog signal into a digital signal, a video divider for inputting and distributing a digital video signal from the analog / digital converter, and a digital video signal distributed from the video distributor. A video signal main processing apparatus of a radar system, characterized by having a video buffer memory to alternately store in two or more buffers. 제1항에 있어서, 상기 CFAR 처리수단은 상기 디지타이져 수단으로 부터 입력되는 현재의 PRT 데이타와 먼저 입력된 후 궤환되는 이전 PRT데이타를 누산하는 합산기와 상기 합산기로부터 누산된 결과를 저장하는 메인 메모리와 상기 메인 메모리로부터 이전 데이타를 입력하여 궤환 알고리즘에 따라 궤환하는 궤환기와 상기 메인 메모리로부터 비디오 데이타를 입력하여 임계 레벨 알고리즘에 따라 레벨화하는 임계 리코더와 필요에 따라 비디어 신호에 존재하는 인터피어런스를 제거하는 인터피어런스 제거기를 구비한 것을 특징으로 하는 레이타 시스템의 비디오 신호 주 처리장치.2. The apparatus of claim 1, wherein the CFAR processing means comprises: an adder for accumulating current PRT data inputted from the digitizer means and previous PRT data inputted first and then fed back; and a main memory for storing the accumulated result from the adder; A feedback circuit for inputting previous data from the main memory and feedback according to a feedback algorithm; a threshold recorder for inputting video data from the main memory and leveling according to a threshold level algorithm; and an interference existing in a video signal as necessary. A video signal main processing apparatus of a Latta system, characterized in that it comprises an interference eliminator for removing. 제1항에 있어서, 상기 버퍼 및 픽셀 타이밍 제어수단은 상기 CFAR처리기에서 검출된 표적신호를 입력하여 디스플레이를 위해 제어 클럭에 따라 비디오 데이타의 출력 속도를 조절하는 비디오 데이타 속도 조절기와 상기 비디오 데이타 속도 조절기와 상기 비디오 데이타 속도 조절기의 출력을 입력하여 외부로 출력하기 위해 구동하는 출력버퍼수단과 외부로부터 픽셀증감신호를 입력하여 픽셀과 비디오 데이타를 동기시키는 신호를 상기 비디오 데이타 속도 조절기로 제공하는 타이밍 제어기를 구비한 것을 특징으로 하는 레이다 시스템의 비디오 신호 주 처리장치.2. The video data rate controller of claim 1, wherein the buffer and pixel timing control means inputs a target signal detected by the CFAR processor to adjust the output speed of the video data according to a control clock for display. An output buffer means for driving the output of the video data rate controller to be output to the outside and a timing controller for inputting a pixel increase / decrease signal from the outside to synchronize the pixel with the video data to the video data rate controller. The video signal main processing apparatus of the radar system characterized in that it comprises 제1항에 있어서, 상기 CFAR 처리수단은 상기 디지타이져 수단으로 부터 입력되는 현재의 PRT 데이타와 먼저 입력된 후 궤환되는 이전 PRT데이타를 누산하는 합산기와 상기 합산기로부터 누산된 결과를 저장하는 메인 메모리아 상기 메인 메모리로부터 이전 데이타를 입력하여 궤환 알고리즘에 따라 궤환하는 궤환기와 상기 메인 메모리로부터 비디오 데이타를 입력하여 임계 레벨 알고리즘에 따라 레벨화하고 인터피러런스 제거 알고리즘을 추가하여 인터피어런스를 제거하는 임계 디코더 및 인터피어런스 제거기를 구비한 것을 특징으로 하는 레이다 시스템의 비디오 신호 주 처리장치.2. The apparatus of claim 1, wherein the CFAR processing means includes: an accumulator for accumulating current PRT data inputted from the digitizer means and previous PRT data inputted first and then fed back; and a main memory for storing the result accumulated from the adder; A feedback decoder that inputs previous data from the main memory and feeds it back according to a feedback algorithm, and a threshold decoder that inputs video data from the main memory to level it according to a threshold level algorithm and adds an interference cancellation algorithm to remove the interference And an interference canceller. 레이다의 비디오 신호를 처리하는 방법에 있어서, 아날로그 비디오 신호를 디지탈 비디오 신호로 변환하는 단계; PRF와 클러터와 잡음이 상태에 따라 미리 설정된 궤환 알고리즘에 따라 궤환하는 현재의 PRT데이타를 합산하는 단계; 상기 합산한 결과를 저장하는 단계; PRF와 클러터와 잡음의 상태를 따라 미리 설정된 임계레벨 알고리즘에 따라 비디오 데이타를 레벨화하여 출력하는 단계; 상기 레벨화된 비디오 출력을 디스플레이 표시신호로 변환하는 단계를 구비한 것을 특징으로 하는 레이다 시스템의 비디오 신호 주 처리방법.CLAIMS 1. A method of processing a video signal of a radar, the method comprising: converting an analog video signal into a digital video signal; Summing current PRT data whose PRF, clutter, and noise are fed back according to a feedback algorithm preset according to a state; Storing the sum result; Leveling and outputting video data according to a preset threshold level algorithm according to states of PRF, clutter, and noise; And converting the leveled video output into a display display signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920024129A 1992-12-14 1992-12-14 Radar device video signal processing device and method KR950003602B1 (en)

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KR940015533A true KR940015533A (en) 1994-07-21
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