Wired testing method of intelligent antenna DOA estimation performance

Abstract

The present invention relates to a wired testing method of intelligent antenna DOA estimation performance. By utilizing a vector direction diagram of an antenna, the response of an intelligent antenna to a direction of arrival (DOA) is expressed as normalized amplitude and phase distribution of array unit output, the normalized amplitude and phase distribution is realized by using a real amplitude adjuster and a real phase regulator, the amplitude adjuster and the phase regulator with realization of the normalized amplitude and phase distribution are inserted into an intelligent antenna system, the real simulation of the direction of arrival is realized, and DOA estimation performance (including direction of arrival estimation, beam reinforcement or zeroing performance) of the intelligent antenna is determined through a wired test. According to the testing method, no far field or compact range field condition is needed in testing and verification of the DOA estimation performance, requirements to a field and an environment are low, the difficulty of application is reduced, the actual performance of intelligent antenna can be reflected more truly, and the method has wide applicability and popularization and application value.

Description

technical field [0001] The invention relates to a smart antenna, in particular to a method for testing the direction of arrival simulation, DOA estimation and adaptive beam enhancement or zeroing performance of the smart antenna. Background technique [0002] The smart antenna is composed of many antenna units, and each unit is fed with a signal of a certain amplitude and phase (called amplitude weight and phase weight) to form a specific beam and realize beam scanning, enhancement or zeroing. Generally, the required beam is formed by adjusting the amplitude regulator of the connection unit to adjust the unit signal amplitude, and controlling the phase of the unit signal by changing the phase regulator of the connection unit to realize beam scanning. [0003] When the smart antenna needs to perform beam enhancement or zero adjustment in a certain direction of arrival (DOA), it adaptively calculates the amplitude weight and phase weight of each unit according to the direction...

AI Technical Summary

Problems solved by technology

The antenna far-field test field is greatly affected by the environment. Whether it is electromagnetic environment or rainy and snowy weather, the test results will be seriously affected or even impossible to test, and it occupies a large area; the antenna compact test field can not be affected by electromagnetic environment and rainy and snowy weather. etc., but the cost is high, and the number of antenna compact test sites around the world is far smaller than the number of far-field test sites

In addition, smart antenna tests are carried out in the above two venues. For smart antennas with large arrays, erection and testing are more complicated and inconvenient, and it takes a long time and costs a lot.

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