| 同信道干扰对载波环和遥测分系统的影响 |
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| 引用本文： | 许鼎阜 张波. 同信道干扰对载波环和遥测分系统的影响[J]. 中国空间科学技术, 1990, 10(3): 7-21 |
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| 作者姓名： | 许鼎阜 张波 |
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| 作者单位： | 洛阳跟踪测量通信研究所,洛阳跟踪测量通信研究所, |
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| 摘 要： | 文中讨论了星地链路中同信道干扰对地面TT&C站的影响;分析了干扰对载波跟踪环路的影响,确定了载波环保持锁定的临界条件,重点分析了干扰对遥测解调分系统的影响。干扰通过两个途径影响误码率:一是通过载波恢复环路,造成参考相位抖动,间接影响误码率;二是直接进入相干检测设备,直接影响误码率。这些影响的结果可用同等误码率下输入信噪比E_b/N_0的损耗表示。
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| 关 键 词： | 同波道干扰 载波干扰 遥测系统 加速度计 性能分析 |
EFFECT OF CO-CHANNEL INTERFERENCE ON A CARRIER TRACKING LOOP AND TELEMETRY SUBSYSTEM |
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| Xu Dingfu Zhang Bo (Luoyang Institute of Tracking Telemetry and Telecommunication). EFFECT OF CO-CHANNEL INTERFERENCE ON A CARRIER TRACKING LOOP AND TELEMETRY SUBSYSTEM[J]. Chinese Space Science and Technology, 1990, 10(3): 7-21 |
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| Authors: | Xu Dingfu Zhang Bo (Luoyang Institute of Tracking Telemetry and Telecommunication) |
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| Abstract: | This paper discribes the effect of co-channel interference on the ground TT&C station between satellite-ground links.The effect of interference on a Carrier-to-Tracking Loop (CTL) is analysed, and the critical value is determined under the tracking condition of CTL.The analysis of the effect of interference on a telemetry demodulation subsystem is emphasized. The interference has an effect on the Bit-Error-Rate (BER) by two ways. On the one hand, the reference phase jitter caused by a carrier recovery loop will have an indirect effect on BER. On the other hand, the interference introduced directly into a coherent detection device will directiy give raise to increase BER.The results of the effects can be expressed in terms of the loss of input Signal-to-Noise ratio E_b/N_0 at the same BER. |
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| Keywords: | Cochannel interference Carrier jamming Telemetry system Accelerometer Performance analysis |
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