卫星激光通信中的干扰及防护

doi:10.11959/j.issn.2096-8930.2023016

摘要/Abstract

摘要：

为了探究卫星激光通信中对于各种外部干扰的安全防护技术，介绍卫星激光通信链路中存在的大气湍流、太空背景噪声、弱光干扰和强激光干扰等4种干扰源及其作用原理，并给出前两种干扰在理论分析中常用的数值模型。其中弱光干扰和强激光干扰又被称为激光有源干扰，是一种人为干扰手段。从通信体制维度出发，分别分析这4种干扰源对于相干和非相干通信体制系统的影响，给出不同体制下应对这4种干扰的当前主流的防护技术，从通用性、成本以及易用性等角度，比较各种防护手段的技术特点并说明它们在卫星激光通信中的主要应用场景。

关键词: 激光有源干扰, 大气湍流, 干扰防护

Abstract:

In order to explore the safety protection technologies for various external interferences in satellite laser communication, four interference sources in the satellite laser communication link and their principles were introduced, included atmospheric turbulence, space background noise, weak light interference, and strong laser interference.And numerical models commonly used in theoretical analysis of the first two interferences were provided.Weak light interference and strong laser interference, also known as laser active interference, were artificial interference methods.From the scheme of communication, the impact of these four interference sources on coherent and incoherent communication systems was analyzed, and the current mainstream protection technologies for these four interferences under different systems were provided.The characteristics of various protection technologies were compared from versatility, cost, usability and their main application scenarios in satellite laser communication were explained.

Key words: laser active jamming, atmospheric turbulence, defense measures of jamming

中图分类号:

TP393

劳陈哲, 孙建锋. 卫星激光通信中的干扰及防护[J]. 天地一体化信息网络, 2023, 4(2): 24-30.

Chenzhe LAO, Jianfeng SUN. Interference and Protection in Satellite Laser Communication[J]. Space-Integrated-Ground Information Networks, 2023, 4(2): 24-30.

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波长/μm	光辐照度/(W·m^-2)
波长/μm	太阳	月亮	水星	金星	火星/木星	土星
0.53	1842	0.002 7	1.8×10^-7	1.8×10^-6	2.8×10^-7	8.4×10^-8
0.85	940	0.001 5	9.5×10^-8	9.0×10^-7	1.5×10^-7	4.6×10^-8
1.06	748	0.001	7.2×10^-8	7.1×10^-7	1.1×10^-7	3.2×10^-8
1.3	411	0.000 54	3.7×10^-8	3.6×10^-7	5.6×10^-8	1.7×10^-8
1.5	204	0.000 24	1.7×10^-8	1.6×10^-7	2.5×10^-8	7.5×10^-9