“time reference scanning beam”的概念、定义、翻译、参考文献-科学参考

单词	time reference scanning beam
释义	time reference scanning beam [`tīm ´ref·rǝns `skan·iŋ ´bēm] ^NAVIGATION 1. A radio or radar beam which is swept to and fro over a sector of space and in such a manner that the interval between reception of successive pulses at an aircraft indicates the aircraft's altitude or azimuth. 2. A system of ground equipment that generates such beams at microwave frequencies to furnish guidance to aircraft making microwave landings. Abbreviated TRSB.
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