面向月表多设施通信网络的通信塔部署方案

doi:10.12305/j.issn.1001-506X.2024.02.37

Abstract

Abstract:

In order to establish a long-term lunar research base and realize the communication coverage of local network, a lunar communication tower (LCT) model and a deployment scheme of multiple base stations are proposed. The functional modules and model structure of LCT are designed by analyzing the requirements of the lunar exploration mission and the lunar surface multi-device communication network. Combining the coverage field strength prediction model based on terrain geometry with the communication link loss by lunar surface terrain. This paper evaluates the effective coverage and transmission rate of multiple LCTs. In terms of deployment scheme, this paper firstly obtains the location of the main base station with the maximum covering average field strength by using ergodic algorithm within the lunar south pole illumination region. Then, this paper uses the genetic algorithm to search the optimal deployment locations of several sub-base stations, which maximizes the coverage field strength within the area with a radius of 10 km. Finally, the deployment schemes of the centralized and distributed main and sub stations of communication tower are simulated to show the coverage performance and transmission rate of CCSDS Proximity-1 protocol, long term evolution (LTE), and Wi-Fi, which fully verifies the feasibility of the multi-device communication network construction on the lunar surface.

Key words: lunar communication tower (LCT), lunar surface terrain geometry, ITU-RP.526 model, field strength prediction, genetic algorithm

CLC Number:

V433.1

Kai QIN, Shushi GU, Zhikai ZHANG, Yu WANG, Qian LIU, Chen ZHAO, Qinyu ZHANG. Communication tower deployment scheme for lunar surface multi-device communication networks[J]. Systems Engineering and Electronics, 2024, 46(2): 729-739.

Figures/Tables 20

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References 32

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任务类型	覆盖范围/km	终端数量	通信速率
机器人探索	0~20	1~5	200 kbps
人类移动探索	0~250	5~10	20 Mbps
月面前哨战探索	0~40	15	80 Mbps

环境参数	数值
月球半径a_e/km	1 738
月表电导率σ/(S/m)	10^-10
月表介电常数ε	3

频段	频率	传输损耗	天线口径	频带资源
S	2.4 GHz	较大	较小	丰富
UHF	300 MHz	较小	较大	缺乏

基站	仿真参数	参数含义	数值
MS	P_t/dBm	发射功率	43
	G_t/dB	发射天线增益	20
	h/m	天线高度	10
	L_d/dB	馈线损耗	3
SS	P_t^′/dBm	发射功率	40
	G_t^′/dB	发射天线增益	10
	h′/m	天线高度	5
	L_d^′/dB	馈线损耗	2
	G_r/dB	接收天线增益	5

方案	场强阈值/dBm	覆盖率/%	通信速率
1 MS	-103	34.33	1 Mbps
	-110	42.49	512 kbps
	-117	45.55	256 kbps
	-130	50.46	64 kbps
集中式 1 MS+2 SS	-103	65.66	1 Mbps
	-110	73.92	512 kbps
	-117	82.72	256 kbps
	-130	88.66	64 kbps
分布式 1 MS+2 SS	-103	58.07	1 Mbps
	-110	73.09	512 kbps
	-117	83.31	256 kbps
	-130	88.31	64 kbps
集中式 1 MS+4 SS	-103	77.79	1 Mbps
	-110	87.98	512 kbps
	-117	96.02	256 kbps
	-130	99.01	64 kbps
分布式 1 MS+4 SS	-103	78.47	1 Mbps
	-110	90.33	512 kbps
	-117	96.42	256 kbps
	-130	99.09	64 kbps

Communication tower deployment scheme for lunar surface multi-device communication networks

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通信协议	方案	场强阈值/dBm	覆盖率/%	通信速率/Mbps	带宽/MHz	调制方式	天线分集
4G LTE	集中式 1 MS+4 SS	-84	8.14	30	20	QPSK	1×1
		-91	25.01	20	20	QPSK	1×1
		-96	49.84	10	20	QPSK	1×1
		-103	65.26	1.5	3	QPSK	1×1
	分布式 1 MS+4 SS	-84	9.01	30	20	QPSK	1×1
		-91	27.19	20	20	QPSK	1×1
		-96	45.57	10	20	QPSK	1×1
		-103	56.96	1.5	3	QPSK	1×1
Wi-Fi	集中式 1 MS+4 SS	-75	4.06	37	20	QPSK	2×2
		-78	6.02	20	20	QPSK	1×1
		-85	17.42	13	20	BPSK	2×2
		-89	31.44	7	20	BPSK	1×1
	分布式 1 MS+4 SS	-75	3.74	37	20	QPSK	2×2
		-78	5.16	20	20	QPSK	1×1
		-85	9.23	13	20	BPSK	2×2
		-89	12.95	7	20	BPSK	1×1

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