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Simulator of GNSS signals for testing of space objects receivers in the earth conditions

Journal of Measurement Science and Instrumentation 2018年第3期9卷 249-256页

作者： yu khomenko V F Kravchenko A G Laush V I Lutsenko I V Lutsenkoa DO Popova Limited Liability Company ＂NaviS-Ukraine＂ Cherkasy 20708Ukraine Kotel＇ nikov Institute of Raclio Engineering and Electronics of Russian Acaclemy of Sciences Moscow 125009Russia Usikov Institute of Raclioph ysics and Electronics of National Academy of Sciences of Ukraine Kharkiv 61085Ukraine

A technique for testing space object receivers using global navigation satellite system （GNSS） signal simulator of the navigation field is proposed. Its structure consists of two blocks which allow synthesizing the scenario of reciprocal displacement of the receiver relative to navigation satellites and their signals. In the first block, according to the known coordinates of the receiver which are specified in tabular form or analytically, the distances between the receiver and the navigation satellites are calculated as well as their relative velocities. According to these data, the second block synthesizes the signals of navigational travelers with the specified characteristics which are transmitted via the air or cable with a given attenuation to the receiver. This allows testing on the earth receivers for airplanes and space objects under different scenarios of their movement, which not only reduces the risk of problems during the flight, but also avoids significant economic costs. Based on real data obtained by approaching two spacecraft using a simulator, the receiver was tested, which shows the promise of the proposed technology.

关键词： global positioning system GPS) global navigation satellite system (GLONASS) global navigation satellite system (GNSS) simulator satellite navigation systems (SNS)

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