Method for integrally detecting and tracking motorized dim target based on information mutual feedback

A weak target detection, detection and tracking technology, used in radio wave measurement systems, instruments, etc., can solve the problems of high detection probability of weak targets, low requirements for detection signal-to-noise ratio and signal-to-noise ratio, and complexity, and achieve enhanced self-adaptation. performance, avoid massive computing and storage problems, and improve usability

Active Publication Date: 2012-08-08
盐城市凤凰园科技发展有限公司
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Problems solved by technology

This method has lower requirements for detection signal-to-noise ratio and signal-to-noise ratio, and has a high probab...

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  • Method for integrally detecting and tracking motorized dim target based on information mutual feedback
  • Method for integrally detecting and tracking motorized dim target based on information mutual feedback
  • Method for integrally detecting and tracking motorized dim target based on information mutual feedback

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] like figure 1 As shown, the present invention includes the following steps: 1. After performing frequency mixing and zero-IF processing on the received radar echo signal within a beam dwell time, send it to a matched filter for pulse compression to obtain a pulse compressed output signal. 2. Feedback the target Doppler estimation (one of the output information of the integration of detection and tracking) obtained by the integration of detection and tracking in the last beam dwell time to the signal accumulation end, and the pulse repetition frequency, beam dwell time and Bandwidth together determines the maximum allowable coherent accumulation time T1 under the condition that the target does not move across units. 3. According to calculation and experiment, the single frame processing time T2 of the integrated detection and tracking method is obtained, and the s...

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Abstract

The invention discloses a method for integrally detecting and tracking a motorized dim target based on information mutual feedback. The conventional method has low requirements on detection signal-noise ratio, and is complex for implement. The method comprises the following steps of: acquiring a pulse compression output signal of a radar echo signal in a beam residence time interval, feeding target Doppler estimation obtained by performing integral detection and tracking in the beam residence time interval to a signal accumulating end, and determining maximum allowed coherent integration timeunder the condition that a target does not perform cross-unit walking together with pulse repeating frequency, beam residence time and a bandwidth; comparing the maximum allowed coherent integration time with the single frame processing time of a detection and tracking integral method; performing coherent or segmental coherent integration on a pulse compression output signal respectively according to a comparison result; and performing one-stage low-threshold constant false alarm processing on an integration result. The self-adaptability of the method is enhanced, the problems of mass calculation and storage caused by the use of an exhaust algorithm are avoided, and the practicability is enhanced.

Description

technical field [0001] The invention belongs to the technical field of radar signal acquisition and processing, and relates to an integrated method for detection and tracking of mobile weak targets based on information mutual feedback. Background technique [0002] Weak target detection and tracking integration technology in complex background refers to the simultaneous detection and tracking of stealth targets, long-range targets, low-altitude small targets and other weak targets by using the integrated technology of radar signal processing and data processing in complex clutter background. This technology has very important research significance and practical value for improving the detection performance of airborne early warning radar for low-altitude targets under complex ground-sea clutter and enhancing radar anti-stealth, anti-low-altitude penetration and long-range reconnaissance and early warning capabilities. [0003] Aiming at the timely detection and accurate trac...

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Application Information

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IPC IPC(8): G01S7/41
Inventor 郭云飞张云龙薛安克彭冬亮陈华杰黄大羽
Owner 盐城市凤凰园科技发展有限公司
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