星上射频敏感器的一种新方案的理论分析
A THEORETICAL ANALYSIS OF A NEW TYPE OF RF SENSOR ON SATELLITE
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摘要: 本文对B.K.Watson等人(1981)提出的射频敏感器的模耦合器作了理论分析并利用本文给出的方法对误差信号进行了处理,使得该射频敏感器获得了很好的性能。除b=1,=0或/2这两种特殊情况外,经处理后的射频敏感器对由大气层等因素造成的来波的去极化是不敏感的;更由于不存在交叉耦合,该射频敏感器的动态跟踪精度高。如把它用于地面站,跟踪高速运动目标,无疑性能也会是很好的。
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关键词:
Abstract: A theoretical analysis of the performances of RF sensor proposed by B. K. Watson et al. (1981) on the Large Satellite is carried out in this paper. By use of the method given here for dealing with the error signals, it makes the EF sensing system be indeed a bigt performance system. Except the case of b=1, =0 or /2, the EF sensor is insensitive to depolarization of the coming waves, and because the horizontal channel does not couple with the vertical one, so it is obvious that the precision of dynamic tracking of the RF sensor on satellite is high and in ground station this RF sensing system will be a good one for tracking righ-speed vehcles. -
B. K. Watson, N. D. Dang and S. Ghosh, A mode Extraction Network for RF Sensing in Satellite Reflector Antenna, Second Int. Conference on Atennas and Propagation, part 1, Antennas,1981, pp. 323-327.[2]章日荣等, 卫星地面站天线新技术研究, 国防工业出版社, 1982.[3]M. L. Kales, Proc. IRE 39 (1951), 544.[4]D. R. Rhodes, Introduction to Monopulse, McGraw-Hill, New York, 1959.[5]J. S. Cook and R. Lowell, Bell Sys. Tech,. J., 42(1963), 1283.[6]张金标, 电子科学学刊, 6(1984), 495. -
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