Test Method of Radar Satellite Remanent Magnetic Moment Based on Large Current Simulation
A test method and magnetic test technology, applied in the direction of magnetic performance measurement, etc., can solve the problems of high cost and endangering the health and safety of testers.
Active Publication Date: 2017-08-29
SHANGHAI SATELLITE ENG INST
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Problems solved by technology
Under the premise of ensuring the validity of the satellite magnetic test, the invention can effectively avoid the microwave radiation generated by the high-power wireless transmission of the radar antenna from endangering the health and safety of the test personnel, and solve the problem of high cost of replacing the simulated equivalent load of the antenna component
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[0030] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0031] Place the satellite on a non-magnetic turntable and park it in the magnetic test field area. The maximum power of the satellite radar antenna is 10kW. The sensors for magnetic testing are arranged in a straight line at the geomagnetic east orientation, and the distances from the satellite are R1=3.5m, R2=3.9m, R3=4.3m, R4=4.7m, satisfying the requirements of 0.4figure 1 shown.
[0032] Park the ground equivalent load equipment outside the magnetic test field area and keep a distance of 2 meters....
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The invention provides a radar satellite residual magnetic moment test method based on large-current simulation. The method comprises the following steps: arranging a radar satellite to a magnetic test area and connecting a magnetic field automatic test system; arranging ground equivalent load equipment outside the magnetic test area; disconnecting cables connecting with an antenna array at plug members of the output ends of antenna distributors, and connecting one end of each test cable to the plug members; connecting the other ends of the test cables to the ground equivalent load equipment; powering up the satellite as required and pushing the satellite out of the magnetic test area, and measuring the magnetic background of the magnetic test area; pushing the satellite to a designated place of the magnetic test area and measuring residual magnetic moment of the satellite; pushing the satellite out of the magnetic test area, and measuring the magnetic background of the magnetic test area again; and if difference value of the two magnetic background measured values is within a indication range, accepting the residual magnetic moment measured value of the satellite. The method does not use wireless emission, provides reference for residual magnetic moment test of the whole satellite of subsequent satellite models, and meanwhile, is suitable for residual magnetic moment test of other satellites.
Description
technical field [0001] The present invention relates to satellite residual magnetic moment test method, in particular, relates to the radar satellite residual magnetic moment test method based on large current simulation, especially the synthetic aperture radar satellite residual magnetic moment test method under radar wireless transmission working condition, also applicable For all other satellite residual magnetic moment tests involving high-power wireless transmission conditions. Background technique [0002] The satellite is in the geomagnetic field environment when it is in orbit, and has been affected by the magnetic interference moment. This long-term accumulation will affect the satellite attitude accuracy, increase the satellite attitude control burden, and even affect the imaging quality of high-precision earth observation satellites such as radar satellites. . For this reason, it is necessary to measure the magnetic moment of the satellite under various working c...
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IPC IPC(8): G01R33/12
Inventor 俞佳江韦锡峰李庆肖文斌
Owner SHANGHAI SATELLITE ENG INST