给出了S型非线性调频信号的传递函数，由传递函数算出了群延迟、频谱函数和模糊函数表达式，并根据模糊函数获得了S型调频信号的各项基本性能。

The transfer function of a S mode nonlinear frequency modulated pulse signal is proposed in this paper, The group delay , spectrum function and ambiguity function expression are calculated from the transfer function, and each basic capability of S mode nonlinear frequency modulated signal is obtained from ambiguity function. The example studied in the paper indicates that only S mode nonlinear frequency modulated pulse signal with a little time width can obtain practical doppler frequency domain.

TN911.6