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对直接序列（ＤＳ）扩频系统抗窄带噪声性能进行了分析，并指出直接序列扩频系统对窄带噪声的抑制能力，是与窄带噪声相对于扩频系统的载波位置密切相关，且有跳变点。所得分析结果，对于扩频系统的设计与应用具有指导意义。
The anti-band-to-band noise performance of the direct sequence (DS) spread spectrum system is analyzed. It is pointed out that the direct sequence spread spectrum system’s ability to suppress narrowband noise is closely related to the carrier position of the narrow-band noise relative to the spread spectrum system, point. The analysis results obtained are of guiding significance to the design and application of spread spectrum systems.