A Radar Tracking Beam Angle Measurement Method

Abstract

The invention relates to a radar tracking beam angle measurement method, which belongs to the field of radar design. In order to overcome the problems of large S-curve data capacity and complicated angle measurement process in the case of large airspace, arbitrary angles, and simultaneous multi-beams in the existing single pulse and difference beam ratio amplitude angle measurement method, the present invention constructs a space-transformed "Universal" goniometric curve (K curve), the abscissa of the K curve is p, and the ordinate is "difference and ratio" volt_ratio, wherein, p=(sin(θ)-sin(θ B )) / λ, the K curve data is stored in the radar computer; according to the "difference and ratio" volt_ratio of the target echo actually measured by the radar, the K curve data is compared, and the table look-up obtains the corresponding p value; according to θ=arcsin (p*λ+sin(θ B )) Calculate the target angle value. The K curve obtained by the spatial transformation is not affected by factors such as beam pointing and frequency, the data storage space is small, the table lookup process is simple, and the single pulse and difference ratio can be easily realized in the case of a large airspace, any angle, and multiple beams at the same time. Angle measurement.

Description

technical field [0001] The invention belongs to the field of radar design, in particular to a radar tracking beam angle measurement method. Background technique [0002] As an important sensor for battlefield perception in modern warfare, radar is the most basic and important function to track and detect the spatial position of the target, and the measurement of the target angle is an important part of it. With the development of phased array radar technology, the monopulse angle measurement method is widely used in radar angle measurement. This method includes ratio amplitude monopulse angle measurement and phase ratio monopulse angle measurement. most common. [0003] The monopulse and difference beam ratio amplitude angle measurement method forms a sum beam, an azimuth angle difference beam and an elevation angle difference beam at each wave position, and the horizontal axis can be obtained by the amplitude ratio of the difference beam pattern and the sum beam pattern as...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is how to provide a radar tracking beam angle measurement method to overcome the S-curve data of the existing single pulse and difference beam ratio amplitude angle measurement method in the case of large airspace, arbitrary angles, and multiple beams at the same time. Problems with large capacity and complicated angle measurement process

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