A Rapid Accumulation Detection Method for High Maneuvering Targets Based on Cross-correlation Function

Abstract

The technical problem to be solved by the present invention is to provide a fast accumulation detection method for high maneuvering targets based on a cross-correlation function, which belongs to the technical field of radar, and relates to a target detection method, which can be used in Gaussian white noise environment based on multiple coherent pulse echoes efficient processing of radar detection. Firstly, the adjacent pulse cross-correlation function of the echo signal is used to correct the distance movement of the target, and then the Doppler movement of the target is corrected through the second cross-correlation operation, and finally the effective accumulation of target energy is achieved through Fourier transform (FFT). . Since all the operations of the present invention can be realized by using fast Fourier transform and fast inverse Fourier transform, the computational complexity of the detection method is greatly reduced, the coherent accumulation of variable acceleration target energy can be quickly realized, and the effective Therefore, the rapid detection capability of the radar for high-speed maneuvering targets can be greatly improved, which is beneficial to the realization of the project.

Description

technical field [0001] The invention belongs to the technical field of radar and relates to a target detection method, which can be used for efficient processing of radar detection based on multiple coherent pulse echoes in a Gaussian white noise environment. Background technique [0002] With the development of science and technology, especially the continuous development of aviation technology and high-speed targets, more and more maneuvering targets appear in the field of radar signal detection. For example, a hyperspeed vehicle in close space can fly at a speed as high as Mach 25, and can move with variable acceleration, which is extremely maneuverable; there are also targets such as ballistic missiles, which can be used for snake-like maneuvering penetration. On the other hand, the increasing maturity of stealth technology has sharply reduced the radar reflection cross-sectional area of ​​maneuvering targets such as space vehicles, resulting in very weak radar echoes an...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a fast accumulation and detection method for high-mobility targets based on cross-correlation functions to solve the problem of rapid accumulation and detection of high-speed targets with variable acceleration. The method does not require any interpolation or search operations, thereby It achieves the purpose of small amount of calculation, easy engineering implementation, and is conducive to improving the real-time detection performance of radar for high-speed maneuvering targets

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