Real beam foresight scanning radar target two-dimension locating method

Abstract

The invention discloses a real beam foresight scanning radar target two-dimension locating method which comprises the steps that S1. imaging system parameter initialization is carried out, the distance between an imaging system any point target and a moving platform is computed, and real beam scanning radar point target simulation parameters are set; S2. distance direction matched filtering is carried out; S3. distance direction moving compensation processing is carried out; S4. scanning radar orientation direction echo signals are subjected to modeling; S5. aweighting least square objective function is established; and S6. target orientation locating is carried out. According to the method, emitted signals and antenna direction image parameter information are used, a target range estimation problem is converted into the problem of a objective function optimal solution relative to a weighting vector wn, by solving the objective function optimal solution, the position information of a target orientation dimension is solved, the problem that a target orientation dimension locating accuracy in a moving platform foresight effect zone is low is effectively solved, and two-dimension accuracy locating of a moving platform foresight zone target distance dimension and an orientation dimension is achieved.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to a two-dimensional positioning method for a real beam forward-looking scanning radar target. Background technique [0002] Because radar is not affected by bad weather and can work around the clock, it plays an indispensable role in military and civilian fields such as military reconnaissance, ocean and hydrological observation, land / sea tracking and rescue. It is of great significance to realize the precise positioning of the target in the forward-looking area of ​​the moving platform, and the realization of functions such as enemy and enemy target reconnaissance and detection, target tracking and strike, and sea surface target search and rescue. [0003] The range-dimensional high-precision positioning of the target in the forward-looking area of ​​the motion platform can be realized by transmitting a large-bandwidth chirp signal and processing it with pulse compression technology...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a method to obtain the position information of the target azimuth dimension by solving the optimal solution of the objective function, and effectively solve the problem of low positioning accuracy of the target azimuth dimension in the forward-looking area of ​​the moving platform The problem is to realize the two-dimensional precise positioning method of the real-beam forward-looking scanning radar target in the distance and azimuth dimensions of the moving platform's forward-looking area.

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