Very Low Frequency (VLF) spectrograms show
sometimes sets of lines called MLR (Magnetospheric Line
Radiation) with frequency spacing close to 50 or 60 Hz. It is
very tempting to attribute these MLR to Power Line
Harmonic Radiation (PLHR). PLHR are the ELF and VLF
waves radiated by electric power systems at the harmonic
frequencies of 50 or 60 Hz. Here we show for the first
time large scale MLR observed simultaneously on
ground and on board a low altitude satellite which is
flying over the same zone.
A book describe RTP protocol over the internet. It offers readers detailed technical guidance for designing, implementing, and managing any RTP-based system
利用计算机串口通信,实现对GPRS模块的控制,并进行英文及汉字的编码及发送功能。-Computer serial communication is used to achieve control of the GPRS module and the code in English and Chinese characters and send functions.
this code used to illustrate the different problems in delta modulation technique also variable slope delta modulation also the bit error rate versus signal to noise ratio for ook and prk