Array Antenna Fault Diagnosis System

Abstract

The invention discloses an array antenna fault diagnosis system, which includes M test antennas, M channel synchronous receivers and a fault diagnosis device. The fault diagnosis device partitions the array antenna through a wave control system, and performs a fault-free test for each partition and Fault simulation test, so that the partitioned beams are aligned with M test antennas in turn; the test antennas get M amplitude values ​​each time, and upload them to the fault diagnosis device through the M channel synchronous receiver, and the fault diagnosis device forms a standard test vector and saves it to the fault Database; when testing, obtain the test vector of the measured partition, if the similarity with the fault-free standard test vector corresponding to the measured partition in the database is less than the threshold, then the measured partition has no fault, otherwise the standard test vector corresponding to all faults Search for the standard test vector closest to this test vector, and the corresponding fault is the fault of the tested partition. The invention can quickly and accurately diagnose the fault of the large array antenna in the external field.

Description

technical field [0001] The invention belongs to the technical field of antenna fault diagnosis, and more specifically relates to an array antenna fault diagnosis system. Background technique [0002] Antenna measurement is the most important aspect in the development and use of antennas, especially array antennas. Due to its complex structure and high testing costs, it has always been a hot and difficult issue in the development and use of array antennas. At present, the fault diagnosis methods for array antennas at home and abroad can be divided into two categories: direct performance parameter testing and fault reasoning. [0003] The direct performance test is to test the radiation characteristics of the front unit through the probe in the microwave anechoic chamber, so that the fault of the front unit can be directly judged. This method has high accuracy and mature technology, but limited by the microwave anechoic Can't be too big. [0004] Fault reasoning is to test t...

AI Technical Summary

Problems solved by technology

Since this method is carried out in an external field, the scale of the array antenna is not limited by the site, but it is more complicated to implement

[0005] When the array antenna fails, how to monitor its status, obtain key performance parameters, quickly locate the faulty antenna unit and eliminate the fault, and quickly restore the technology of the phased array antenna without the need for the radar to completely stop working. Tactical indicators are still a very complex technical problem

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