A Three Coordinate Low Altitude Small Target Radar

Abstract

The invention relates to a radar system, specifically to a three-coordinate low-altitude small target radar. The three-coordinate low-altitude small target radar comprises an antenna feeder subsystem, a receiving subsystem, a signal processing subsystem, a wave beam control subsystem, a rotary table servo subsystem, a terminal subsystem and a power supply subsystem, a four-channel T / R module adopts a distributed T / R component, and the component adopts highly integrated design and has the advantages of light weight, small size, good consistency, excellent technical indexes and the like. The three-coordinate low-altitude small target radar provided by the invention can realize search and tracking of an aerodynamic target such as a small airplane, a paraglider and an unmanned aerial vehicle in a low-altitude airspace in a range with a central radius of 45km, precisely monitor the target in the low-altitude area which is low in height, slow in speed and small in size, display and output distance, direction, speed and height information of the flight target, and form a three-coordinate motion situation of the low-altitude target.

Description

technical field [0001] The invention relates to a radar system, in particular to a three-coordinate low-altitude small-target radar. Background technique [0002] Phased array radar is a phase-controlled electronically scanned array radar, which uses a large number of individually controlled small antenna elements arranged into an antenna array, and each antenna element is controlled by an independent switch. , the main beams with different phases (directions) can be synthesized, and the phase can be changed in both axes; similar to Thomas Young’s double-slit experiment, the electromagnetic waves emitted by the phase shifters of the phased array can constructively interfere The principle strengthens and synthesizes a nearly straight radar main lobe, while the side lobes are greatly reduced due to interference cancellation. [0003] The beam scanning of ordinary radars is achieved by the rotation of the radar antenna to achieve mechanical scanning. In this way, the beam poin...

AI Technical Summary

Problems solved by technology

[0003] The beam scanning of ordinary radar is to realize the mechanical scanning by the rotation of the radar antenna. The beam pointing in this way is not flexible, and it is impossible to accurately monitor the low-altitude, slow-speed, and small-sized targets in the low-altitude area.

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