一种轻小型S波段卫星中继通信机的设计与实现
The Design and Implementation of a Light and small S-Band Satellite Relay Transceiver
  
DOI:
中文关键词:  浮标  S波段链路  卫星中继通信机  零中频
英文关键词:buoys  S-band link  satellite-relay transceiver  zero-IF
基金项目:
作者单位
饶浩 1.中国科学院国家空间科学中心北京 1001902.中国科学院大学北京 100190 
梁显锋 1.中国科学院国家空间科学中心北京 100190 
张津舟 3.华为科技有限公司(北京)北京 100085 
安军社 1.中国科学院国家空间科学中心北京 100190 
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中文摘要:
      针对远海无人值守浮标与岸基站间的实时、可靠和高速率通信需求,研制了一种轻小型S波段卫星中继通信机。通过采用高集成度的零中频接收单元和25W高效率GaN功放发射单元,实现了对岸站遥控指令(2 kbps)的接收和浮标载荷数据(2 Mbps)的实时回传。通过提高收发隔离度和实时解算接收信噪比,确保了海上卫星通信的高可靠性。通过射频前端和信号处理单元等硬件的一体化设计,实现了整机的轻小型化(尺寸约为192 mm×134 mm×92 mm,质量小于2.0 kg)和低功耗(小于80W)。四级海况下的海上试验表明,S波段中继通信机能够满足复杂海况条件下远海浮标的实时高速率双向通信需求,大回路数据通信误码率Pe<10-5。
英文摘要:
      A S-band satellite-relay transceiver of light and miniaturization is designed and implemented to meet the requirements of real-time reliable and high-speed communication between unmanned buoys on the sea and shore-based station. The receiving of remote control instruction (2 kbps) and the real-time return of buoy load data (2 Mbps) are realized by using highly integrated zero-IF receiving unit and high efficiency GaN power amplifier transmitting unit with power of 25 W. The high reliability of marine satellite communication is ensured by improving the isolation between transmitter and receiver and calculating the received SNR(signal to noise ratio)in real time. Through the integrated design of hardware such as RF front-end and signal processing unit, the miniaturization (size is about 192 mm *134 mm *92 mm, mass is less than 2.0 kg) and low power consumption (less than 80W) of the transceiver are realized. The sea trials under four-stage sea conditions show that the S-band relay transceiver can meet the real-time high-speed bidirectional communication requirements of the offshore buoy under complex sea conditions, and the BER(bit error rate) of large loop data communication is less than 10-5.
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