Method for improving digital multi-beam phased-array antenna self-tracking dynamic target real-time performance

Abstract

The invention provides a method for improving a digital multi-beam phased-array antenna real-time performance self-tracking dynamic target, and aims at providing a method capable of improving multi-beam phased-array antenna self-tracking real-time performance. The method comprises the following steps that in a self-tracking process of a target, a wave control computer transmits 50ms / time accordingto a network protocol and communicates with a digital wave beam forming unit DBF at a wave beam pointing direction of an azimuth angle and a pitch angle; a wave beam tracking angular velocity algorithm module calculates azimuth velocity + pitch angular velocity, and a digital wave beam tracking inertial unit interpolates wave beam pointing which is performed once every 1 ms according to motion inertial pointing of the wave beam pointing; the digital wave beam forming unit DBF forms an azimuth difference signal and a pitch difference signal, sends to a tracking receiver to solve a combined signal amplitude, an azimuth error voltage and a pitch error voltage, and sends the combined signal amplitude, the azimuth error voltage and the pitch error voltage to a wave control computer; and the azimuth and pitch angle of a target are obtained through a digital tracking loop according to a ratio and polarity of the combined difference signal, and new beam pointing is formed.

Description

technical field [0001] The invention relates to a method for improving the real-time performance of self-tracking of a dynamic target by a digital multi-beam phased array antenna in the field of aerospace measurement and control. Background technique [0002] The target tracking and multiple working methods of phased array antennas, as well as the improvement of the performance of phased array radars, are largely related to the ability to form multiple beams. Therefore, the self-tracking technology of the beam to the target in the design of the digital multi-beam phased array antenna is a key technology, which has a significant impact on the beam pointing, beam gain, sidelobe, etc. In severe cases, the target signal cannot even be received normally. Digital multi-beam antenna is the product of the combination of array antenna technology and digital signal processing technology. The multi-beam phased array antenna is composed of many radiating element arrays, and the beamfor...

AI Technical Summary

Problems solved by technology

The advantage of this method is that it can accurately analyze the trajectory of the target, and it can track reliably even in the case of target pose changes and partial occlusions, but the tracking accuracy depends on the accuracy of the model, and in real life it is necessary to obtain It is very difficult to model accurately

It will bring difficulty to target tracking in the video where the moving target is located, which will affect the accuracy and stability of moving target detection and tracking. There are also great challenges in the adaptability of the system to different environments.

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