Target measurement sequence extraction method in clutter and leak detection environment
A target quantity and measurement technology, which is applied in complex mathematical operations, special data processing applications, navigation calculation tools, etc., can solve problems such as difficulties and ambiguous sources of target measurement, and achieve the effect of improving the accuracy rate
Pending Publication Date: 2022-03-29
HANGZHOU DIANZI UNIV
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However, the number of clutter measurements is often much greater than the number of target measurements, and each frame of clutter neither contains rules nor carries any useful information, so it solves the source of target measurements in clutter and missed detection environments Blur is very difficult
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[0110] The present invention will be further explained below in conjunction with the accompanying drawings;
[0111] A target measurement sequence extraction method in clutter and missed detection environment, such as figure 1 shown, at k 1 At each measurement point, a target measurement sequence is initialized, using k 1 Each target measurement sequence initialized at time has a 2The measurement points at the time are subject to three simultaneous constraints and thresholds, and each framed measurement point is split into a target measurement sequence, and the target measurement sequence is managed by the track quality degree. Merge with the target measurement sequence, and finally get k 2 The high-precision target measurement sequence is obtained at all times, and then the algorithm is repeated by back-substitution, and finally the target measurement sequence can be extracted in a complex environment.
[0112] The simulation scenario of this embodiment is as follows fi...
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The invention discloses a target measurement sequence extraction method in clutter and leak detection environments. According to the method, the prior information of a target, a sensor, a sensor platform and a historical target measurement sequence is utilized, a distance, angle and Doppler measurement general constraint function is provided for a leak detection condition, and target measurement sequence extraction in a leak detection environment is realized; meanwhile, the invention further provides an innovative track splitting management strategy, target measurement sequence extraction in the clutter environment is achieved, and finally the purpose of extracting the target measurement sequence in the clutter and leak detection environment is achieved. Through the method, target measurement sequence extraction is successfully realized in a complex environment, the algorithm only generates fewer false tracks, the average extraction accuracy reaches 98.8%, the average track continuity reaches 94.1%, the average time consumption of each frame of the algorithm is only 0.033 s, and the method has very strong practical engineering applicability.
Description
technical field [0001] The invention belongs to the field of automatic target tracking, and relates to a method for extracting measurement sequences belonging to the same target at different times from sensor measurement sets with uncertain sources, and specifically relates to a method for extracting target measurement sequences in a clutter and missed detection environment . Background technique [0002] In the actual tracking environment, the sensor measurement set usually faces the problems of clutter interference and target missed detection. There are generally two sources of clutter: 1) from the natural environment such as terrain and weather in the same space as the sensor; 2) from other non-interesting targets. The occurrence of missed detection is generally due to the occlusion of obstacles such as mountains and birds or the limited detection capability of the sensor itself, resulting in a few frames in the sensor measurement set that do not contain target measureme...
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IPC IPC(8): G06F30/20G06F17/18G06F17/16G01C21/20G06F119/10
CPCG06F30/20G06F17/18G06F17/16G01C21/20G06F2119/10
Inventor 石义芳张瑜陈柔洁
Owner HANGZHOU DIANZI UNIV