该模型主要实现Chirp系统中Chirp信号的BOK调制，Chirp信号分为上扫频和下扫频信号，可以通过对正余弦信号进行BOK调制来产生。-This model mainly realize the BOK modulation Chirp Chirp signal in the system, under the Chirp signal is divided into the upper frequency sweep and frequency sweep signal, can pass