Missile-borne anti-interference-antenna automatic test system and test method

An automatic test system and antenna technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of complex interference, fast change of interference signal strength, and large change range, so as to improve effectiveness and integrity sexual effect

Active Publication Date: 2016-01-06
BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE +1
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Problems solved by technology

[0003] At the same time, due to the characteristics of high dynamics, high altitude, and large attitude changes of the carrier, the

Method used

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  • Missile-borne anti-interference-antenna automatic test system and test method

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[0052] 1. Test system

[0053] The test system of the present invention includes interference antenna array, interference source, switch matrix, test turntable, turntable controller, calibration reference antenna, navigation receiver, spectrum analyzer and monitoring station (including monitoring computer and monitoring software), as attached figure 1 Shown.

[0054] 1. Interference antenna array

[0055] The antenna array consists of 41 antenna elements. The unit antenna adopts a planar helical antenna. Right-hand circular polarization, beam bandwidth ≥70°, working frequency: 1.15-1.65Ghz, full channel axial ratio ≤3. The unit antenna needs to be protected from rain, sun, heat and cold. The antenna is equipped with an adjustable direction support base.

[0056] The characteristics of the LD-BGG30 antenna are as follows:

[0057] Frequency range: 1555MHz-1615MHz / 1200MHz-1270MHz

[0058] Input impedance: 50Ohm

[0059] Polarization method: Right-handed circular polarization (RHCP)

[0...

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Abstract

The invention relates to a missile-borne anti-interference-antenna automatic test system and a test method. The automatic test system comprises an interference antenna array, an interference source, a switch matrix, a test rotary table, a rotary table controller, a calibration reference antenna, a frequency spectrum analyzer, a navigation receiver and a monitoring station. The interference antenna array comprises a plurality of antennas. The antennas are three-dimensionally distributed in a mouse cage shape. The test rotary table is arranged on a center of the interference antenna array. An anti-interference antenna is arranged on a rotating disk of the test rotary table and is rotated along with the rotating disk. And a height of the anti-interference antenna is controllable. Interferences are exerted from every direction which includes a backward direction of a tested antenna, and a limitation that the interferences are traditionally exerted only from a forward direction is broken through so that the test system can simulate a real situation. A statistics method is used, positioning precision is introduced and is taken as a criterion, and validity and integrity of the test are increased.

Description

technical field [0001] The invention relates to an automatic test system and a test method for a missile-borne anti-jamming antenna, belonging to the field of anti-jamming tests applied to satellite navigation. Background technique [0002] The anti-jamming capability of the satellite navigation anti-jamming antenna is one of the most important indicators, expressed in terms of interference-to-signal ratio. The test of the interference-to-signal ratio requires the receiving system to receive the navigation satellite signal and apply the interference signal at the same time, and conduct the test in combination with the positioning situation and the satellite situation. During the test, on the condition that the receiving system satisfies the PDOP value and the lower limit of positioning accuracy at the same time, the ratio of the maximum interference signal applied to the satellite signal power is the dry signal. Therefore, the conditions required for the test are: (1) satel...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 彭云张宇翔张瑞鹏李莎莎肖继红邓皓升王晓飞李欣冀金文王遂学
Owner BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE
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