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Novel method for testing directional diagram of satellite antenna

A technology of satellite antenna and test antenna, applied in transmitter monitoring and other directions, can solve the problems of lack of later data processing and difficulties

Active Publication Date: 2015-05-27
中国卫通集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the domestic antenna manufacturers adopt this method. The advantages are convenient and fast. The disadvantage is that there is a lack of post-data processing, and it is difficult to judge whether certain technical parameters meet the requirements of the indicators.

Method used

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  • Novel method for testing directional diagram of satellite antenna

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Experimental program
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Embodiment Construction

[0067] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0068] According to the definition of the antenna pattern, the present invention tests by continuously scanning the level of the peak point, and records the level of the received signal at each antenna angle as the antenna rotates, and the level value corresponds to the relative gain of the antenna. The traditional spectrum analyzer test method can only use the single scan method of 0 Span mode for testing, but the present invention can choose 0 Span method and continuous scan method for testing through automatic mode.

[0069] When using the present invention to test the directional pattern, the type, size and nominal gain of the antenna under test can be recorded in the test computer, and it can be determined whether the test antenna is limited in azimuth and elevation.

[0070] The testing method of the present invention is realized by satell...

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Abstract

The invention relates to a novel method for testing a directional diagram of a satellite antenna. The method is implemented by a satellite antenna test system. The test system comprises a test station, a tested station and a test satellite, wherein the test station comprises a test computer, a spectrometer and a test antenna; the tested station comprises a tested antenna and a signal generation module. According to the method, the spectrometer is used for acquiring data, and the test data is processed and counted in the test computer, so that late data processing can be realized; a test result is obtained by a statistical method; furthermore, during data analysis by the test computer, abnormal data in the test data can be removed, and the influence of an accidental mistake on the test result is avoided; by the method, a near sidelobe directional diagram and a near sidelobe depolarization directional diagram can be respectively tested; the polarization isolation degree can be obtained by statistics by the directional diagram, and the calculating precision of the polarization isolation degree can be improved.

Description

technical field [0001] The invention relates to the field of satellite antenna testing, in particular to a new method for testing the pattern of a satellite antenna, which is suitable for the verification test of antenna network access in the C, Ku, and DBS satellite communication frequency bands. Background technique [0002] Since the satellite communication system is an open system, it is very susceptible to interference; any external signal in any frequency band will enter the satellite system and affect the normal business of the satellite. Therefore, before the satellite antenna leaves the factory or officially enters the satellite communication network (referred to as "network access") to transmit or receive signals, it must pass the antenna pattern test. The test results meet the relevant technical indicators before leaving the factory or entering the network. [0003] Technical indicators generally include: antenna gain, main lobe / first side lobe isolation, polariz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/12
Inventor 王桃荣蒋龙城张南平
Owner 中国卫通集团股份有限公司
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