The test method of the phase error measuring device of the inter-board cable of microwave imaging satellite

Abstract

The invention provides a microwave imaging satellite between-plate cable phase error measuring device and a measuring method thereof. The measuring device comprises a simple movable scanning rack and a laser tracker. The simple movable scanning rack is placed in front of a satellite antenna; a vertical frame is formed of four steel poles; installing feet are provided with wheels for moving; a horizontal frame is provided with one movable vertical pole which is provided with an installing base which can move in the vertical direction; a motor can drives three screw rods to achieve movement of the vertical pole, the movement of the installing base on the movable vertical pole and the telescoping of the installing base, so that adjustment of three-dimensional positions of the installing base is achieved. The laser tracker consists of a reflector, a laser tracking head, a controller and a user computer. The device can measure antenna between-plate cable phase error rapidly without satellite operation and solves the problems of long test time and great risks in the prior art caused by using a planar near-field antenna testing system.

Description

technical field [0001] The invention relates to a satellite measuring device and a testing method thereof, in particular to a microwave imaging satellite inter-board cable phase error measuring device and a testing method thereof. Background technique [0002] Microwave imaging satellites generally use planar active phased array antennas (hereinafter referred to as "antennas") to transmit and receive radio frequency signals. Due to the large size of the antenna and the limitation of the envelope of the launch vehicle fairing, the launch configuration of the satellite design uses the antenna to be folded and folded on the side of the star in several sub-boards, and the antenna is unfolded after entering orbit. The antenna sub-boards use flexible coaxial radio-frequency cables (referred to as "inter-board cables") to realize the interconnection of radio-frequency signals. between the two sub-boards. Due to the unsatisfactory mechanical bending performance of the flexible coa...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a microwave imaging satellite inter-board cable phase error measurement device and its testing method, which realizes fast, satellite-free inter-antenna cable phase error measurement, and overcomes the problem of using plane close-up in the prior art. The field antenna test system has the shortcomings of long test time and high risk; it solves the problem of measuring the phase error of the cable between the antenna boards when the satellite is integrated, reduces the test time and cost, and avoids the risks brought by a large number of satellite operations; The model satellite has a certain degree of versatility, and can be used to measure the phase error of the cable between the plane phased array antenna panels of other satellites

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