UHF single-channel direction-finding antenna array

Abstract

The present invention discloses an ultrashort-wave single-channel direction-finder antenna array. The objective of the invention is to provide a multi-platform and foldable single-channel direction-finder antenna array with frequencies capable of covering an ultrashort-wave range. The technical scheme of implementation method comprises the following steps that: each of antennas with two frequencyranges outputs 2-5 paths of radio frequency signals to a radio frequency switch matrix, the radio frequency switch matrix switches low and high frequency ranges through a radio frequency switch to 2-5power divider input terminals, and selects and inputs an antenna with a low frequency range or an antenna with a high frequency range at the same time to the power divider input terminals, signals output by the radio frequency switch in each path are divided into two paths by the power dividers, four phase shifters are output in one path, input and output terminals of the phase shifters are switched by the radio frequency switch, signals in one path are output to a combiner 2; signals in the other path are output to a combiner 1, the 2-5 paths of antenna signals are combined into one omnidirectional reference signal which is transmitted into the phase shifter and the combiner 2, and the combiner 2 combines the output signals of the phase shifter and the output signals of the combiner 1 into single-channel radio frequency signals.

Description

technical field [0001] The invention relates to an ultrashort-wave single-channel direction-finding antenna array. More specifically, it is the design of a direction-finding portable antenna array based on a single-channel correlation interferometer for ultra-short-wave electromagnetic wave signals. Background technique [0002] With the advancement of electronic technology, the implementation methods of various direction finding systems will be different and the working performance will continue to improve. Among many direction finding systems, interferometer direction finding technology has high accuracy, small polarization error, high direction finding sensitivity, direction finding time period, certain anti-wave front distortion ability, strong site adaptability, reliable operation and easy maintenance Etc. However, the traditional interferometer direction finder has the problems of large number of channels and large resource consumption. In order to overcome these sh...

AI Technical Summary

Problems solved by technology

Due to the great difference between the actual installation environment and the standard test site (i.e. non-reflection environment), large direction finding errors will occur no matter whether the single-channel correlation interferometer method or the multi-channel interferometer method is used

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