远距离无线RFID NRF9e5 具有跳频功能的函数请认真阅读文件。 -distance wireless RFID NRF9e5 function is a function of frequency hopping Please read the documents carefully.

维格纳-威尔分布三维图面图，跳频信号的stft，跳频信号的维格纳-威尔分布的频谱图-Wigner- Will the distribution of three-dimensional surface maps, frequency hopping signal stft, frequency hopping signal Wigner- Will the distribution of spectrum