IWR1443BOOST: IWR1443线性调频率的斜率默认为正，我如何调成负值呢

如标题，默认调频率为77GHz升频到81GHz，那么我调哪个参数可以从81GHz降频到77GHz呢

Shine：

TI的FMCW radar是升频调制的，请参考下面文档说明。In the signal used in FMCW radars, the frequency increases linearly with time. This type of signal is also called a chirp.https://www.ti.com/lit/wp/spyy005a/spyy005a.pdf