A bomb-borne millimeter-wave radar ground altimeter

Abstract

The invention relates to a device for measuring the ground height of a missile-borne millimeter-wave radar. By setting at least three microstrip antenna units with the transmitting antenna unit as the center point and equidistantly at the same interval angle, the transmitting antenna unit is used Restricting the mutual position of the at least three microstrip antennas, the transmitting antenna unit generates a radar antenna pattern whose center line is perpendicular to the first plane according to the radar antenna pattern formed by the at least three microstrip antenna units. The first beam, and the second beam that surrounds the center line of the first beam and is emitted outward at an angle α with the first beam, and by selecting the distances calculated by the first beam and the second beam respectively The minimum value of the ground distance is taken as the measured distance from the ground. Compared with the prior art, the invention realizes the double-beam detection function of a single radar, improves the accuracy of the ground height measurement and saves the cost.

Description

technical field [0001] The invention relates to the field of radar detection, in particular to a ground height measuring device for a missile-borne millimeter-wave radar. Background technique [0002] Missile-borne radar refers to a radar composed of microelectronic devices (including antennas, lenses, transceiver circuits, signal processing components, and power supply finishing components) installed on the head of a projectile (or rocket head, or missile head), It is used to detect the distance, azimuth, speed, etc. of the target. Modern missile-borne radars generally use millimeter-wave radars. [0003] The height measurement of the warhead to the ground at the end stage means that the warhead needs to accurately measure the height of the warhead from the ground when it is close to the ground target, so as to select the best height from the ground target for the most effective strike. That is to say, in order to best complete the warhead strike mission, the terminal hei...

AI Technical Summary

Problems solved by technology

[0004] The existing millimeter-wave radar detection technology is applied to the distance measurement and height measurement of the missile terminal, mainly including the following two methods: one is the single-radar single-beam distance measurement method, which uses a small radar mounted on the warhead, and the antenna beam points to the warhead axis. However, there is a large error in the measured distance from the ground when the warhead lands and the ground has a ground-grazing angle; the second is the multi-radar multi-beam ranging method, by adding multiple lateral radars on the side of the warhead. , so that when the radar is moving, there is always a radar beam aimed at the ground in the side direction, so that the error of the measured shortest distance from the ground is small. However, this method needs to use multiple side radars to assist in height measurement, and the cost is relatively high

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