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Synthetic ultra-narrow pulse radar detection threshold calculation method based on resampling algorithm

An extremely narrow pulse, radar detection technology, applied in the field of target detection, to achieve the effect of improving the calculation speed and the calculation speed of the detector threshold

Active Publication Date: 2020-07-10
北京理工大学重庆创新中心 +1
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Problems solved by technology

[0004] The present invention provides a synthetic extremely narrow pulse radar detection threshold calculation method based on a resampling algorithm to solve the shortcomings of traditional methods that need to store a large number of random numbers and occupy memory, and improve the calculation speed of the detector threshold

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  • Synthetic ultra-narrow pulse radar detection threshold calculation method based on resampling algorithm
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  • Synthetic ultra-narrow pulse radar detection threshold calculation method based on resampling algorithm

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Embodiment 1

[0048] In order to solve the problem that the traditional threshold determination method needs to store a large number of random numbers, the memory usage is high, and the calculation speed of the detector threshold is slow, the quantile point interpolation algorithm is used. By setting the quantile points corresponding to the false alarm rate, according to the input test statistics, the interpolation algorithm is called to iteratively update the size of the threshold corresponding to each quantile point, so as to solve the shortcomings of traditional sorting to determine the quantile points that need to store a large number of random numbers and occupy memory.

[0049] By changing the probability distribution of generating random numbers, resampling enables the sampling algorithm to generate more samples that contribute to the calculation of the false alarm rate, further reduces the number of generated samples required to accurately count the false alarm probability, and improv...

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Abstract

The invention provides a synthetic ultra-narrow pulse radar detection threshold calculation method based on a resampling algorithm. Random samples are generated through resampling, and radar detectorthresholds corresponding to a plurality of false alarm rates are determined at the same time by using a quantile interpolation algorithm so that the defect that a large number of random numbers need to be stored to occupy a memory in a traditional method is overcome, and the calculation speed of the detector thresholds is increased.

Description

technical field [0001] The invention relates to the technical field of target detection, in particular to a method for calculating a detection threshold of a synthetic ultra-narrow pulse radar based on a resampling algorithm. Background technique [0002] In synthetic very narrow pulse radar, the target no longer has the characteristics of an ideal point target, but appears as an extended target containing multiple scattered points. At present, there are radar detection algorithms such as integral detector, MN detector, SSD-GLRT (Spatial Scattering Density-Generalized Likelihood Ratio Test, spatial scattering density generalized likelihood ratio test) detector, sequential detector, etc., but SSD-GLRT, For detectors such as sequential detectors, it is difficult to calculate the detector threshold by analytical methods because the distribution of the test statistics is difficult to obtain. [0003] In order to obtain the threshold of this type of detector, the traditional met...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 陈新亮张洪纲盖季妤梁振楠刘泉华龙腾董锡超
Owner 北京理工大学重庆创新中心
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