Carrier-borne full-coherent phased-array radar calibrator

Abstract

The invention relates to a carrier-borne full-coherent phased-array radar calibrator which comprises a local oscillator module, upper and lower frequency mixing modules, an intermediate frequency processing module, a target distance, a speed simulation module, a broadband noise generating module, a master control platform and the like, wherein the local oscillator module is divided into first and second local oscillator modules; the upper frequency mixing module is divided into first and second upper frequency mixing modules; the lower frequency mixing module is divided into first and second lower frequency mixing modules; the master control platform comprises a CPCI (Compact Peripheral Component Interconnect) motherboard, a power supply, a keyboard, a display, an external interface and a clock and delay control circuit; and each module and each component of the master control platform are supplied with power and carry out data exchange by the CPCI motherboard. According to the invention, a radar echo signal synthesized by overlaying a target and a broadband noise power can be vividly simulated and the detection capacity of the target under the noise interference of a carrier-borne full-coherent phased-array radar can be tested. The carrier-borne full-coherent phased-array radar calibrator has good application prospect in the technical field of calibration and checking of the phased-array radar.

Description

technical field [0001] The invention relates to a shipboard fully coherent phased array radar calibrator (abbreviated as radar calibrator), which belongs to the technical field of phased array radar calibrating and checking. It is used after repairing or developing a shipboard phased array radar Complete the radar parameter verification and performance test. Background technique [0002] After the shipboard phased array radar is repaired, it needs to be calibrated for range measurement and speed measurement to test the performance of the radar system. The conventional distance calibration method is to use the known standard reflector on the shore to drive the ship equipped with phased array radar a certain distance away from the shore, and turn on the radar to measure the standard reflector to complete the verification and calibration of the radar. It took a lot of manpower, material and financial resources, so Gao Zhiyong and others developed a certain type of fully cohere...

AI Technical Summary

Problems solved by technology

However, the calibrator developed by Gao Zhiyong et al. can only simulate targets at a fixed distance, and at the same time cannot dynamically simulate radar echo signals with changes in distance and speed; the airborne phased array radar simulator developed by Hu Xiaochuan et al. has a complex noise modeling algorithm. , the amount of calculation is large, the noise bandwidth is narrow, and the design of the non-coherent system cannot meet the calibration requirements of modern full phased array radars. The in-depth performance test of the radar on land is limited, and it can only be verified by flying on the ship.

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