LFM信号具有更高的距离、速度分辨率，以及更好的低截获概率特性。
The LFM signal has a high resolution of range and speed, as well as low probability of intercept.
低截获声纳通过选择合适的发射信号，在保持探测能力的同时，降低被敌方侦察声纳截获的概率。
Low probability of interception (LPI) sonar selects appropriate transmitting signals and reduces the probability of being intercepted by hostile scouting sonar while it maintains detection capability.
导出了信号截获因子与信号参数的关系，认为大的时间带宽积是低截获概率信号的必要条件。
The relation between the interception factor and signal parameters is deduced. Large time bandwidth (TB) product is a necessary condition for an LPI signal.
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