High-speed target Doppler velocity measurement method based on least square method

Abstract

The invention proposes a high-speed target Doppler velocity measurement method based on the least square method, and the main idea of the method is that the method comprises the steps: determining a radar, supposing that there is a high-speed target in a radar detection range, and calculating the fuzziness of the high-speed target in the radar detection range and the blind speed of the high-speedtarget in the radar detection range; calculating a rough measurement value of the radial speed of the high-speed target in the radar detection range according to the fuzziness of the high-speed targetin the radar detection range and the blind speed of the high-speed target in the radar detection range; calculating a blind speed matrix of the high-speed target in the radar detection range according to the rough measurement value of the radial speed of the high-speed target in the radar detection range, and calculating the Doppler fuzziness root number vector of the high-speed target in the radar detection range based on the least square method; and calculating the real radial speed of the high-speed target in the radar detection range based on the Doppler fuzziness root number vector of the high-speed target in the radar detection range and the blind speed matrix of the high-speed target in the radar detection range.

Description

technical field [0001] The invention belongs to the technical field of pulse radar signal processing, in particular to a Doppler speed measurement method for high-speed targets based on the least square method, which is suitable for practical engineering applications. Background technique [0002] In modern warfare, high-speed weapons have become a hot spot in national defense research due to their faster strike speed and greater destructive power; as the most important defense tool in national defense, how to effectively detect high-speed moving targets , Tracking or imaging is the top priority; and the speed of the moving target is a prerequisite for the above indicators. Therefore, radar's accurate speed estimation for high-speed moving targets has very important theoretical significance and practical value. [0003] In engineering, the pulse Doppler (PD) method is often used for speed measurement, and the pulse Doppler speed measurement method has been widely used in th...

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Problems solved by technology

[0008] Although the above three methods can solve the speed ambiguity problem, they all have problems such as large amount of calculation and poor real-time performance.

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