Maneuvering turning target tracking-before-detection method based on pseudo-spectrum matched filtering
A matched filter and target detection technology, which is applied in the field of tracking before maneuvering and turning targets, computer equipment and computer readable storage media, can solve the problems of weak target detection and parameter estimation that cannot be maneuvered and turn, and improve the signal-to-noise ratio gain and detection probability, avoiding the effect of performance loss
Active Publication Date: 2020-10-20
HARBIN INST OF TECH
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[0006] The technical problem to be solved by the present invention is to solve the problem that the existing technology cannot effectively detect and estimate the parameters of the weak target maneuvering
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[0073] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0074] Such as figure 1 As shown, a method for tracking before detection of maneuvering and turning targets based on pseudo-spectral matched filtering provided by an embodiment of the present invention includes the following steps:
[0075] S1. Obtain the RD echo data received by the radar, establish the echo model of the target on the RD pl...
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The invention relates to a maneuvering turning target tracking-before-detection method based on pseudo-spectrum matched filtering, computer equipment and a computer readable storage medium. The methodcomprises the steps of acquiring RD echo data received by a radar, establishing an echo model, and determining an evolution equation; setting intervals and the number of matched filters according tothe echo model; for each matched filter, predicting a target position according to the evolution equation, constructing a pseudo spectrum, and realizing RD plane multi-frame energy accumulation basedon pseudo spectrum accumulation; according to a preset detection threshold, judging whether the peak value of an energy accumulation result is greater than the detection threshold, and if so, estimating the distance, Doppler, turning target parameters and turning rate of the target; carrying out track backtracking through an evolution equation; and outputting track backtracking results.. Accordingto the method, effective detection and parameter estimation can be carried out on the weak target of maneuvering turning on the RD plane, the detection probability is high, and the estimation error is small.
Description
technical field [0001] The present invention relates to the technical field of space target tracking, in particular to a method for tracking before detection of maneuvering and turning targets based on pseudo-spectrum matching filtering, computer equipment and a computer-readable storage medium. Background technique [0002] Modern warfare requires radar to have the ability to detect and track moving targets when performing long-range warning and early warning tasks. However, with the increasingly complex targets and environments, such as the development of stealth technology, the radar reflection cross section of the target is greatly reduced, and the reflected echo of the target is greatly weakened; the signal-to-noise ratio, The signal-to-clutter ratio is significantly reduced, which greatly reduces the detection performance of the radar. [0003] The traditional tracking method takes the data after threshold detection as input, but because the threshold detection of a s...
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IPC IPC(8): G01S13/70G01S7/41
CPCG01S13/70G01S7/415
Inventor 周共健王亮亮
Owner HARBIN INST OF TECH