Missile-borne millimeter wave radar ground height measuring device

Abstract

The invention relates to a missile-borne millimeter wave radar ground height measuring device. At least three microstrip antenna units take a transmitting antenna unit as a central point, and are equidistantly arranged at the same interval angle; the restriction of the mutual positions of the transmitting antenna unit and at least three microstrip antennas is utilized, andd the transmitting antenna unit transmits a signal according to a radar antenna pattern formed by the transmitting antenna unit and at least three microstrip antenna units, wherein the center line of the first wave beam is perpendicular to the first plane, the second wave beam surrounds the center line of the first wave beam, an included angle alpha is formed between the second wave beam and the first wave beam, and the minimum value of the ground clearance calculated through the first wave beam and the second wave beam is selected as the measured ground clearance. Compared with the prior art, the device achieves thedual-beam detection function of a single radar, and the cost is saved while the accuracy of height measurement to the ground is improved.

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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