星上射頻敏感器的一種新方案的理論分析
A THEORETICAL ANALYSIS OF A NEW TYPE OF RF SENSOR ON SATELLITE
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摘要: 本文對B.K.Watson等人(1981)提出的射頻敏感器的模耦合器作了理論分析并利用本文給出的方法對誤差信號進行了處理,使得該射頻敏感器獲得了很好的性能。除b=1,=0或/2這兩種特殊情況外,經處理后的射頻敏感器對由大氣層等因素造成的來波的去極化是不敏感的;更由于不存在交叉耦合,該射頻敏感器的動態(tài)跟蹤精度高。如把它用于地面站,跟蹤高速運動目標,無疑性能也會是很好的。
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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]章日榮等, 衛(wèi)星地面站天線新技術研究, 國防工業(yè)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]張金標, 電子科學學刊, 6(1984), 495. -
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