摘要
为了提高无人机在恶劣环境下的工作能力,将从遥感系统中采集的视频信号转换为数字信号,设计了基于CPLD系统的FSK调制解调收发电路,用VHDL语言实现了FSK调制解调的设计;同时将CMOS反向器应用于接收电路,构成模拟放大器将信号放大。整个设计基于ALTERA公司的Quartus Ⅱ开发平台,使用MAXⅡ系列的CPLD芯片实现,并用OrCAD PSpice软件对放大电路进行仿真分析。实验结果表明无线收发电路能够保证图像传输质量,达到预期设计的无线传输要求。
In order to improve the UAV in a harsh environment work ability, the video signals collected from the remote sensing system convertes to digital signals. This paper introduces a design of FSK modulation and demodulation circuits based on CPLD system, using VHDL language to realize FSK modulation and demodulation design. And CMOS inverter is used in receiving circuits to constitute analog amplifier. The whole design is based on the ALTERA development platform Quartus Ⅱ , and realized by using the MAXⅡ series chip of CPLD, and OrCAD PSpice software is used to simulate and analyse amplifying circuits. The results show that the wireless transceiver circuits ensure the image quality, and achieve the expected design of wireless transmission requirements.
出处
《电子器件》
CAS
北大核心
2012年第4期427-430,共4页
Chinese Journal of Electron Devices
基金
国家973计划项目(2007CB3106505)
