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The Fundamental Definitions in radar measurement Principle and Theory of Space and Time

Journal of Systems Engineering and Electronics 1992年第3期3卷 11-22页

作者： Lin JinFirst Academy, Ministry of Aero -Space Industry, P.R China P.O.Box 142-30-409, Beijing 100854,China First Academy Ministry of Aero-Space Industry P.R China P.O. Box 142-30-409 Beijing 100854 China

Fundamental definitions of distance and velocity in radar measurement principle are examined and revised from strict theoretical point of view. Synchronization scheme - for clocks in uniform, translatory relative motion is introduced as theoretical foundation for GPS and GLONASS type navigation and positioning technology. Traditional definitions of two-way radar measurement, based on arithmetic mean vlaue concept, turn out to be special cases of revised definitions for one-way radar measurement, based on geometric mean concept, derived from synchronization of moving clocks in accordance with the principle of relativity. The essential physical meaning of Lorentz transformation is interpreted in terms of radar measured parameters. Invariance or absoluteness of four dimensional interval turns out to be invariance or absoluteness of geometric mean time interval. The Lorentz factor turns out to be ratio of geometric mean and arithmetic mean time intervals in terms of radar measured parameters. Theoretical results are illustrated transparently by numerical examples. A crucial experiment for direct testing of the second postulate of special relativity by means of GPS of GLONASS type technology is proposed in this paper.

关键词： radar measurement Theory of space and time Special relativity GPS GLONASS.

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Unification and Comparison between Two Concepts of radar Target Angular Glint

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Journal of Systems Engineering and Electronics 1992年第1期3卷 35-44页

作者： Hongcheng, Yin Peikang, Huang Beijing Institute of Environmental Features Beijing China

This paper provides a general proof of unification between two concepts of radar target an gular glint. The analysis of a two-point target model, consisting of a electrically and a magnetically ideal dipole, shows the relation, difference and equivalent condition between them more clearly. Angular glint has been synthesized from the measured data of radar echo phase, and compared with the theoretical result.

关键词： Image processing radar measurement

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Single Sample Polarization Filtering

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Journal of Systems Engineering and Electronics 1992年第1期3卷 45-55页

作者： Xiaolin, Qiao Yongtan, Liu Harbin Inst. of Tech. Harbin China

A new method on radar signal polarization filtering using only single sample of signal is proposed. The algorithm is very simple and it is suitable for the filtering processing of a stationary or unstationary polariza... 详细信息

关键词： radar measurement Signal Processing

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