| 摘要: |
| 地基直接深空测控通信/深空探测难题均在于长达数亿公里的超远距离带来的巨大传输损耗。提出了基于Ka频段分布式大口径天线阵的地基直接测控通信/深空探测设想，探讨了其应用模式及工作机理，对其中共同的关键技术Ka频段上行超大功率空间合成给出了解决措施，具体包括设备自身的ps量级时延稳定性设计、对流层延迟ps量级实时修正、空间传输距离的ps量级预测等。 |
| 关键词: 深空探测 测控通信 分布式天线阵 |
| DOI： |
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| 基金项目: |
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| Ka-band distributed large antenna array system and key technology |
| ZHANG Xu |
| (Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| The restraining factor for both ground-based deep space telemetry,tracking and command(TT&C) and deep space exploration is the too large transmission loss due to the ultra-long transmission distance of several hundred million kilometers.The investigation based on Ka-band distributed large antenna array is proposed.Its application schema and working mechanism is discussed.The preliminary scheme for the spatial signal synthesis of Ka-band uplink antenna array,the common key technology of both ground based deep space TT&C and deep space exploration,is illustrated,including the equipment's picosecond order delay stability design,troposphere picosecond order delay correct technology and spatial transmission distance picosecond order calculation. |
| Key words: deep space exploration TT&C;distributed antenna array |
