基于LabVIEW的远程激光通讯系统

Remote Laser Communication System Based on LabVIEW

激光通讯是一种新型的通讯方式。随着激光技术的发展,激光通讯技术被应用在越来越多的高新科技领域中,特别是卫星通讯等前沿技术领域。文中提出了一种基于LabVIEW的加密实时语音的激光通讯方式。通过LabVIEW程序采集音频信号,加密后储存到指定文件夹,播放出加密后的音频信号。音频信号经过激光调制电路转变为激光信号,接收端电路解调激光信号,把激光信号转换为音频信号。由NI采集卡MY DAQ采集经过解调的音频信号,将采集到的音频信号经过接收端的上位机解密还原后得到原始信号。以此达到语音信号加密传输的目的。

Laser communication is a new means of communication. With the development of laser techniques, lasercommunication technologies are applied in an increasing number of high-tech fields, especially in frontal technologiessuch as satellite communications. This paper proposes a laser communication method of encryption real-time voices basedon LabVIEW program. LabVIEW program is used to collect audio signals, encrypts and stores them into the specifiedfolder, eventually plays the encrypted audio signals. Through the modulation circuit system of laser, the audio signals areconverted into the laser signals. The receiver demodulates the laser signals, and converts them to the audio signals. MYDAQ, a NI capture card, collects the demodulated audio signals, and restores them to their origin through the decryptionof the LabVIEW program in the receiving end. Then the encrypted transmission of voice signals is achieved.