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本文结合固定翼飞机低空导航任务,阐述了采用调频连续波体制的理由。在单一正弦波调频的情况下,分析各参数与雷达性能的关系。如:调频指数与信号能量利用率的关系,隔离度与贝塞尔边带阶数的关系、隔离度与漏电长度的关系,隔离度与调制频率的关系、高度死区的分布规律,死区宽度与贝塞尔边带阶数的关系,死区宽度与调制频率及距离的关系,低高度时信噪比与调制频率、贝塞尔边带阶数的关系等等,得出相应
In this paper, the low-altitude fixed-wing aircraft navigation mission, elaborated on the reasons for the use of frequency modulated continuous wave system. In the case of a single sine wave frequency modulation, the relationship between the parameters and the radar performance is analyzed. Such as: FM index and the relationship between signal energy utilization, isolation and Bessel’s relationship between the order of the sideband, isolation and leakage length, the relationship between isolation and modulation frequency, the distribution of highly dead zone, dead zone The relationship between the width and the order of Bessel’s sideband, the relationship between the width of the deadband and the modulation frequency and distance, the relation between the signal-to-noise ratio and the modulation frequency and the Bessel’s sideband order at low altitude,