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本文从 TIROS 气象卫星的帧同步码(n=60)的生成多项式入手,分析了189个 M_(63),的截尾码的误同步概率,证明该码不是字长为60比特时的最佳或准最佳码,并在 E=1,2,3,4,5和10时,找出了许多优于它的码组。我们找出的最佳码的误同步概率,比 TTROS 码小两倍到一个数量级以上。同时,还指出Tiros 码的设计者,从生成多项式 f_1(x)出发是失策的,建议我国在设计类似的系统时,应从 f_2(x)出发。
This paper starts from the generating polynomial of frame synchronization code (n = 60) of TIROS meteorological satellite, and analyzes the error synchronization probability of 189 M63 (63) censored codes, and proves that this code is not the best when the word length is 60 bits Or quasi-best code, and finds out many code groups better than E = 1, 2, 3, 4, 5 and 10. The error probability of finding the best code is two times smaller than that of the TTROS code by more than an order of magnitude. At the same time, it is pointed out that the designers of Tiros codes are inadvisable from the generator polynomial f_1 (x), and it is suggested that our country should start from f_2 (x) when designing a similar system.