| 星载数字化TDRSS/USB双模应答机设计与试验 |
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| 引用本文： | 莫乾坤,何晨. 星载数字化TDRSS/USB双模应答机设计与试验[J]. 无线通信技术, 2008, 17(3): 55-58 |
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| 作者姓名： | 莫乾坤 何晨 |
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| 作者单位： | 上海交通大学电子工程系,上海,201800 |
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| 摘 要： | 介绍了跟踪与数据中继星系统(TFDRSS)中用户星TDRSS/USB双模应答机的功能和组成,在传统USB应答机和扩频应答机的基础上设计了一种数字化的星载TDRSS/USB双模应答机,具有TT&C和TDR两种工作模式.接收机采用了中频数字化的载波跟踪和解扩解调、伪码快速捕获和精确跟踪方法;发射机的相干载波产生和PM调制采用直接数字频率合成(DDS)方法;两种模式下共用了收发通道和部分FPGA.资源.新的设计方法使应答机的调试难度、稳定性、载波和伪码捕获速度、跟踪精度、测距时延误差、功耗、重量等指标均有改善.
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| 关 键 词： | 跟踪与数据中继星系统 应答机 数字化 载波跟踪 扩频 |
Design and Testing of a Digital Satellite Dual-module TDRSS/USB Transponder |
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| MO Qian-kun,HE Chen. Design and Testing of a Digital Satellite Dual-module TDRSS/USB Transponder[J]. Wireless Communication Technology, 2008, 17(3): 55-58 |
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| Authors: | MO Qian-kun HE Chen |
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| Affiliation: | MO Qian-kun,HE Chen(Shanghai Jiaotong University,Shanghai 200030,China) |
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| Abstract: | The article introduces the functionality and composition of the digital dual-module TDRSS/USB transponder in the Tracking and Data Relay Satellite System.The design is succeed to the technology of universal S-band transponder and spread spectrum transponder,which has TT&C and TDR dual working modes.The receiver adopted the IF digitized approach for carrier tracking,demodulation,pseudo noise code capturing and precise tracking.The transmitter is using Directly Digital frequency Synthesizer to generate correl... |
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| Keywords: | TDRSS transponder digitize carrier traking spread spectrum |
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