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13位巴克码信号的自相关函数有六对等幅旁瓣,主旁瓣比为22.3dB,若采用延迟对消的方法对其进行旁瓣抑制处理,至少需十二节延迟线组成加权网络,方可使输出主旁瓣比达到32dB。本文介绍了一种变形13位巴克码信号即首尾两码的幅度降低一半的13位巴克码信号,该信号的自相关函数仅有两对旁瓣,将其通过仅用两节延迟线组成的加权网络,可使输出信号的主旁瓣比提高到42dB。
The autocorrelation function of 13-bit Barker code has six pairs of equal-amplitude sidelobes, with the main-sidelobe ratio of 22.3dB. If the sidelobe suppression is implemented by the method of delay cancellation, at least twelve delay lines form a weighted network , In order to make the main side of the output than 32dB. This paper presents a 13-bit Barker code signal with a modified 13-bit Barker code whose amplitude is reduced by half in both ends. The autocorrelation function of the signal has only two pairs of sidelobes and passes through only two delay lines Weighted network, the mainlobe ratio of the output signal can be increased to 42dB.