Research And Realization Of Wireless Data Link By RF Transceiver Technology On The Ground

The nations military weapons and equipments to the informationization gradually trend along with the high-speed development of the wireless data link, and as a ground station with absolute command control center, the communication performance directly affects the operational level of the whole system of excellence. Described in this article the RF transceiver technology, wireless data link ground is based on the requirement of the development and design of a stable performance of transceiver hardware platform.This project belongs to wireless data link positioning system, which can realize single station measurement and positioning of eight flight terminal at the same time, the project is to verify the transceiver channel reliability, discusses the monitoring of a single flight terminal, design verification principle of RF hardware platform can be realized. The hardware platform is divided into receiving and transmission channel, respectively discuss each channel technology introduction, design, and circuit design. Finally, debugging and analysis was carried out on the hardware platform, using a special instrument observation and analysis to be desired and give solutions and subsequent research train of thought.Wireless data link ground station RF transceiver platform design, orthogonal modulation and demodulation circuit not only realize signal frequency directly, but also reduces the level after the baseband module of FPGA processing speed, low intermediate frequency transceiver technology on the basis of the application to avoid the common problems in the local oscillator leakage of RF circuit, protection platform can work normally. Transmission channel has20dBm RF output power and300MHz wide band; Receiving channel output peak-peak baseband level voltage is2V, at the same time have the dynamic range of60dB; Sending and receiving platform can be controlled by the baseband module, easy to operate. Test shows that:in this paper, the design of wireless data link ground station transceiver platform overall technical indicators can meet the project, are discussed to send and receive technology of RF signal conversion and processing has a certain value for reference and study.