Phased array radar monopulse high-resolution angle measurement system and method

Abstract

The invention discloses a phased array radar monopulse high-resolution angle measurement system and method. The system includes at least one transmitting antenna for transmitting monopulse signals, atleast two receiving antennas with the same configuration for receiving the monopulse echo signals reflected by the target to form a beam scanning angle, a signal processor for processing the monopulse echo signals received by the receiving antennas, calculating information of the target and the echo power sum value of the receiving antennas under the action of the target, and also for weighting of received / transmitted monopulse signals, correction of amplitude and phase and storage or loading of working parameters, and an upper computer for receiving the information transmitted by the signalprocessor through a network interface. The system has the advantages that the system adopts a mode that the transmitting antenna and the receiving antenna are separated, formation of low sidelobe transmitting and receiving beams is easy to realize, the scanning range is increased, the problem that the traditional monopulse angle measurement cannot be detected when the difference between two targetangles is very small is solved by the method, and the super-resolution of targets with adjacent angles is realized.

Description

technical field [0001] The invention relates to the field of radar target tracking, in particular to a phased array radar single-pulse high-resolution angle measurement system and method. Background technique [0002] The monopulse angle measurement algorithm is a fast and effective angle estimation algorithm commonly used at present. It has been widely used in practical radar systems because of its relatively simple implementation, high angle measurement accuracy and good robustness. However, when multiple targets appear in the detection area, and only one or a few of them are really concerned, and the others are interference, it is time-consuming to distinguish which target is a valid target; Under the edge-scan system, when the distance and speed of two targets are the same, and there is only a slight difference in angle, the detection and tracking of the target becomes particularly difficult. One solution is to use super-resolution radar, which can effectively distingu...

AI Technical Summary

Problems solved by technology

When the outside world is spatially colored noise or there is main lobe interference, the traditional monopulse algorithm is no longer effective, so proposing an algorithm that can achieve high resolution of the target has important engineering application value

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