| 摘要: |
| 本文论述了利用DSP处理器和FPGA完成70MHz卫星下行信号的载波捕获与跟踪、多普勒提取、遥测和测距信号的解调，从而实现了中频接收的数字化、软件化、提高了系统的精度，大大缩小了系统的体积。 |
| 关键词: 航天测控通信 下行载波信号解调 通信系统 基带 中频接收单元 |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:April 20, 2001 |
| 基金项目: |
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| Scheme for Digitizing IF Receiving Unit of Space TT&C Communication System |
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| Abstract: |
| In this paper, carrier capturing and tracking, Doppler acquisition, demodulation of TT&C and ranging signal of 70 MHz satellite downlink signal with help of DSP multi-processors and FPGA is introduced, IF receiving unit digitization and software design are realized, system accuracy is improved, whihe the size of system is considerably reduced. [WT5HZ] |
| Key words: Space TT&C,DSP,Application,Down link carrier signal demodulate, |
