Super-resolution direction finding device based on uniform circular array and processing system

Abstract

The invention discloses a super-resolution direction finding device based on a uniform circular array and a processing system. The device comprises a computer, the computer is connected with a radio frequency switch driver, a dual-channel receiver and a correction signal source, the dual-channel receiver is connected with a switch matrix, and the switch matrix is connected with the correction signal source, the radio frequency switch driver and a nine-element dual-channel uniform circular array. According to the invention, through proper weighting and the sequence of the change-over switches,the dual-channel method can utilize the data received by the two channels to recover the covariance matrix of the array, the system complexity is greatly reduced, the system cost and volume are reduced, the direction finding precision of the system is improved, and the test result is more stable and effective.

Description

technical field [0001] The invention relates to the technical field of super-resolution direction finding, in particular to a super-resolution direction finding device and a processing system based on a uniform circular array. Background technique [0002] All the multi-channel super-resolution direction finding methods on the market are one channel corresponding to one receiver. However, this method makes the number of receivers increase with the increase of array elements, resulting in a corresponding increase in hardware cost and volume. At the same time, the channel The increase in the number of channels will also increase the inconsistency of amplitude and phase between channels and increase the error, which will deteriorate the performance of high-resolution and super-resolution direction-finding estimation algorithms, resulting in the stability and accuracy of the direction-finding system not reaching the foreign advanced level. [0003] The above defects are worth im...

AI Technical Summary

Problems solved by technology

[0002] All the multi-channel super-resolution direction finding methods on the market are one channel corresponding to one receiver. However, this method makes the number of receivers increase with the increase of array elements, resulting in a corresponding increase in hardware cost and volume. At the same time, the channel The increase in the number of channels will also increase the inconsistency of amplitude and phase between channels and increase the error, which will deteriorate the performance of high-resolution and super-resolution direction finding estimation algorithms, resulting in the stability and accuracy of the direction finding system not reaching the advanced level of foreign countries.

Images