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Performance analysis method for weak and small target track-before-detect technology based on extreme value theory

A technology of extreme value theory and weak and small targets, which is applied in the field of performance analysis of tracking technology before detection of weak and small targets based on extreme value theory, and can solve problems such as complex data distribution characteristics.

Pending Publication Date: 2021-11-30
NANJING LES ELECTRONICS EQUIP CO LTD
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Problems solved by technology

Theoretical analysis algorithm needs to accurately deduce the distribution function of the sample data, but after TBD processing, the distribution characteristics of the data become very complicated, and it is impossible to start from the analytical expression

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  • Performance analysis method for weak and small target track-before-detect technology based on extreme value theory
  • Performance analysis method for weak and small target track-before-detect technology based on extreme value theory
  • Performance analysis method for weak and small target track-before-detect technology based on extreme value theory

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Embodiment Construction

[0085] The invention discloses a method for analyzing the performance of weak and small target tracking technology before detection based on extreme value theory, which includes the following steps:

[0086] Step 1: Collect or simulate to get radar data.

[0087] Step 2: Perform TBD processing on the collected radar data, obtain the final value function, and detect the target position by extracting the maximum point.

[0088] Step 3: collect target radar data, repeat steps 1 and 2 to obtain target sample data; collect non-target radar data, repeat steps 1 and 2 to obtain the number of false alarm samples.

[0089] Step 4: Analyze the performance of the TBD algorithm, analyze the detection probability of the obtained target samples through the Monte Carlo algorithm; analyze the false alarm probability of the obtained false alarm samples through the extreme value theory.

[0090] In the performance analysis method of tracking technology before detection of weak and small target...

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Abstract

The invention provides a performance analysis method for a weak and small target track-before-detect technology based on an extreme value theory. The method comprises the steps of 1, acquiring or simulating radar data; 2, performing weak and small target track-before-detect (TBD) processing on the acquired radar data to obtain a final value function, and detecting a target position by extracting a maximum value point; 3, collecting radar data with a target, repeating the steps 1 and 2 to obtain target sample data, collecting target-free radar data, and repeating the steps 1 and 2 to obtain false alarm sample data; and 4, performing TBD algorithm performance analysis, analyzing the detection probability of the obtained target sample through a Monte Carlo algorithm, and analyzing the false alarm probability of the obtained false alarm sample through the extreme value theory.

Description

technical field [0001] The invention relates to the field of radar signal detection, in particular to a method for analyzing the performance of weak and small target tracking technology before detection based on extreme value theory. Background technique [0002] Track-before-detection technology was first applied in the field of infrared and optical image processing. In recent years, track-before-detection algorithm (TBD) has been applied in the field of radar weak signal detection. Two methods are often used in the analysis of detection performance. One is the Monte Carlo statistical method, which collects a large number of samples and analyzes the detection performance statistically. The number of samples affects the statistical accuracy; The analytical expression of the distribution function calculates the detection performance. Monte Carlo statistical method requires a large number of samples to estimate accurate values, such as estimating the false alarm probability o...

Claims

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Application Information

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IPC IPC(8): G01S7/487G01S7/493G01S17/66G06F17/15G06F17/18
CPCG01S7/4873G01S7/493G01S17/66G06F17/18G06F17/15
Inventor 赵玉丽翟海涛鉴福升罗军徐勇商凯朱伟陈硕刘文
Owner NANJING LES ELECTRONICS EQUIP CO LTD