太赫兹科学与电子信息学报, 2020, 18 (1): 61, 网络出版: 2020-04-13
低截获通信波形设计
Waveform design of Low Probability of Interception communication
通信波形 低截获 调制解调 信道编码 跳频 communication waveform low intercept modulation and demodulation channel coding frequency hopping
摘要
在现代战争中, 飞行器之间通信的隐蔽性是飞行器完成打击、侦查等任务的关键因素。如何提高系统的抗截获性能成为军用通信系统设计的关键问题。研究了低截获系统相关理论在通信波形设计方面的应用, 提出用“截获距离”和“低截获品质因数”来衡量通信系统的抗截获性能; 分析了影响系统抗截获性能指标的因素和提升系统抗截获性能的途径。以此为基础研究了不同调制解调方式、信道编码方式以及跳频参数对通信系统抗截获性能的影响; 建立了抗截获通信系统仿真模型, 分析了该系统的截获距离、品质因数和误码率; 最终得到截获距离小于通信距离的通信系统。仿真结果验证了方法的有效性, 为低截获通信系统的设计提供了参考。
Abstract
In modern wars, the concealment of communication between aircrafts is the key factor for aircraft to complete the combat, reconnaissance and other tasks. How to improve the anti-interception performance of the system becomes the key problem of the military communication system design. The application of the theory of Low Probability of Interception(LPI) system in communication waveform design is studied. The anti-interception performance of communication waveform is measured by intercepting distance and the LPI quality factor. The factors that affect the anti-interception performance of the system and the methods to improve it are analyzed. On this basis, the effects of different modulation and demodulation modes, channel coding modes and frequency hopping parameters on the anti-interception performance of communication systems are investigated. The simulation model of anti-interception communication system is established, and the interception distance, quality factor and error bit rate of the system are simulated. Finally, a communication system with interception distance less than communication distance is obtained. The validity of the method is verified, and it provides a reference for the design of LPI system.
刘春玲, 苏文宇, 杨阳. 低截获通信波形设计[J]. 太赫兹科学与电子信息学报, 2020, 18(1): 61. LIU Chunling, SU Wenyu, YANG Yang. Waveform design of Low Probability of Interception communication[J]. Journal of terahertz science and electronic information technology, 2020, 18(1): 61.