一种新的平滑频率扫描方式及其实现

工程中常用的匀速频率扫描方式在频率拐点处的瞬时频率变化率 较大，针对此缺点，提出了一种新的频率扫描方式——平滑频率扫描，并推导出平滑扫描的 数学表达式。利用MATLAB进行建模仿真表明，平滑频率扫描可以有效减少扫描在频率拐点处 的瞬 时频率变化率，提高接收端的捕获概率。实际工程应用证明，该平滑频率扫描方式有效可行 。

A new smooth frequency-sweeping method and its realization

In view of the disadvantage that the even frequency-sweeping which is used wide ly in practice now has big instantaneous frequency change rate on frequency infl ection point,a new smooth realization mode of frequency sweeping called smooth f requency-sweeping is proposed, and the math formula is derived. Simulation of t he smooth frequency-sweeping with MATLAB shows that using this method can effec tively reduce the change rate of instantaneous frequency scanning at the frequen cy inflection point, and effectively improve the capture probability of receiver .Practical engineering application proves that the above implementation is effec tive and feasible.