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Target trajectory detecting method

A detection method and target trajectory technology, applied in the field of target detection, can solve the problems of reducing the effect of coherent accumulation and so on

Inactive Publication Date: 2015-02-04
郑敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of the coherent accumulation time, the movement of the target will cause the distance migration and Doppler frequency migration of the target echo, so that the energy of the target echo will be dispersed in multiple units, thereby reducing the effect of coherent accumulation

Method used

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Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. 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.

[0016] An embodiment of the present invention provides a method for detecting a target trajectory, including:

[0017] Step 1: Carry out coherent accumulation on echo signals;

[0018] Step 2: Determine the search step size based on the cumulative peak ratio obtained by coherent accumulation; the determination of the search step size determines the algorithm performance and calculation amount of migrat...

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Abstract

The invention provides a target trajectory detecting method. According to the target trajectory detecting method provided by the invention, first, migration compensation is carried out on a target echo by use of coherent accumulation, and then, the target echo is further accumulated by a non-coherent accumulation method. Therefore, effective accumulation of target echo is realized, and the requirement of target detection can be achieved.

Description

technical field [0001] The invention relates to the field of target detection, in particular to a target track detection method. Background technique [0002] Long-term coherent accumulation is the first method to improve the signal-to-noise ratio for radar weak target detection. Long-term coherent accumulation makes full use of the amplitude and phase information, and theoretically there is no accumulation loss. The coherent accumulation time cannot be increased indefinitely, and will be affected by various factors, among which the influence of target motion is particularly prominent. With the increase of the coherent accumulation time, the movement of the target will cause the distance migration and Doppler frequency migration of the target echo, so that the energy of the target echo is dispersed in multiple units, thereby reducing the effect of coherent accumulation. Therefore, for long-term coherent accumulation, range migration and Doppler frequency migration must be c...

Claims

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Application Information

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IPC IPC(8): G01S13/58G01S7/40
CPCG01S13/58G01S7/2927G01S7/354
Inventor 郑敏
Owner 郑敏