卷积编码是深空通信系统和无线通信系统中常用的一种编码方式。
Convolutional encoding is one of encoding methods commonly used in the deep space communication systems and the wireless communication systems.
深空通信中，利用伪随机编码信号可实现低信噪比接收和多址通信。
In communication of deep space, the receiving of low signal-to-noise and multi-address communication can be realized with pseudo-random code signal.
同时，根据信道特点和数据传输速率的要求给出了深空通信的调制方式。
Meanwhile, modulation schemes for deep space communication are provided based on channel features and requirements on data transmission rates.
深空通信中面临的问题之一就是如何在低信噪比信道环境下可靠地传递信息。
In deep space communications, one of the problems is how to transmit message credibly in low signal-to-noise ratio (SNR) channel environment.
分析了未来深空通信网络面临的难题；阐述了深空通信网络协议的研究现状；
Some issues on future deep-space communication network are studied, and the research developments on deepspace communications network protocols are depicted.
采用现有的GEO地面天线完全能够满足深空通信的要求，提高了系统的可靠性。
Existing GEO ground antenna's can meet the requirements of the deep space communication missions.
维特比译码算法是一种最大似然译码，它可以得到较高的译码速度以及译码计算时间固定，因而在深空通信中得到广泛应用。
Viterbi algorithm is a kind of maximum likelihood decoding method, which can obtain high decoding speed and cost fixed decoding time, so it is widely used in deep space communication.
维特比译码算法是一种最大似然译码，它可以得到较高的译码速度以及译码计算时间固定，因而在深空通信中得到广泛应用。
Viterbi algorithm is a kind of maximum likelihood decoding method, which can obtain high decoding speed and cost fixed decoding time, so it is widely used in deep space communication.
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