北斗系统C波段导航信号调制方式及性能评估

doi:10.12305/j.issn.1001-506X.2022.12.25

系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (12): 3800-3810.doi: 10.12305/j.issn.1001-506X.2022.12.25

北斗系统C波段导航信号调制方式及性能评估

倪育德¹, 邹玲¹, 刘瑞华^1,*, 陈万通¹, 秦哲², 王凯¹

1. 中国民航大学电子信息与自动化学院, 天津 300300
2. 中国民航大学中欧航空工程师学院, 天津 300300

收稿日期:2021-10-25 出版日期:2022-11-14 发布日期:2022-11-24
通讯作者: 刘瑞华
作者简介:倪育德 (1963—), 男, 教授, 硕士, 主要研究方向为全球导航卫星系统、陆基导航系统|邹玲 (1996—), 女, 硕士研究生, 主要研究方向为卫星导航信号调制方式|刘瑞华 (1965—), 男, 教授, 博士, 主要研究方向为卫星导航|陈万通 (1986—), 男, 副教授, 博士, 主要研究方向为卫星导航|秦哲 (1981—), 男, 讲师, 博士, 主要研究方向为光子学与技术|王凯 (1982—), 男, 副教授, 硕士, 主要研究方向为机载电子系统测试与仿真
基金资助:
中央高校基本科研业务费专项基金(ZXH2011C013);国家重点研发项目(2016YFB0502402)

C-band navigation signal modulation mode and performance evaluation of BeiDou system

Yude NI¹, Ling ZOU¹, Ruihua LIU^1,*, Wantong CHEN¹, Zhe QIN², Kai WANG¹

1. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
2. Sino-Europe Institute of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China

Received:2021-10-25 Online:2022-11-14 Published:2022-11-24
Contact: Ruihua LIU

摘要/Abstract

摘要：

针对C波段卫星导航信号严格的兼容性约束要求, 探索性地将基于椭圆球面波函数的连续相位调制(continuous phase modulation based on prolate spheroidal wave functions, CPM-PSWF)应用于C波段导航。在分析了关键参数对CPM-PSWF信号功率谱特性影响后, 初步筛选出4个CPM-PSWF子族作为C波段候选导航信号, 并对其导航性能指标进行评估。在权衡C波段信号频谱兼容性和各导航性能指标基础上, 提出将“QM2PSWF(10) C=6”且h=0.5的CPM-PSWF信号用作北斗系统C波段的导航信号。研究表明, 所提出的CPM-PSWF信号频谱泄露少, 带外衰减快, 同时在码跟踪精度与抗多径性能方面, 较当前C波段非CPM-PSWF候选导航信号更具竞争力。

关键词: C波段导航, 基于椭圆球面波函数的连续相位调制, 兼容性, 导航性能

Abstract:

In view of the strict compatibility constraint requirements of C-band satellite navigation signals, continuous phase modulation based on prolate spheroidal wave functions(CPM-PSWF) is exploratorily applied to C-band navigation. After analyzing the influence of key parameters on the power spectrum characteristics of CPM-PSWF signal, four CPM-PSWF sub-families are initially screened as candidate navigation signals for C-band, and their navigation performance indicators are also evaluated. On the basis of weighing the spectrum compatibility of the C-band signal and various navigation performance indicators, it is proposed to use the CPM-PSWF signal with "QM2PSWF(10) C=6" and h=0.5 as the C-band navigation signal of the BeiDou system. The research shows that compared with the current C-band non-CPM-PSWF candidate navigation signal, the proposed CPM-PSWF signal spectrum leakage is less, the out-of-band attenuation is faster, and the code tracking accuracy and anti-multi-path performance are more competitive.

Key words: C-band navigation, continuous phase modulation based on prolate spheroidal wave functions (CPM-PSWF), compatibility, navigation performance

中图分类号:

V249.3

倪育德, 邹玲, 刘瑞华, 陈万通, 秦哲, 王凯. 北斗系统C波段导航信号调制方式及性能评估[J]. 系统工程与电子技术, 2022, 44(12): 3800-3810.

Yude NI, Ling ZOU, Ruihua LIU, Wantong CHEN, Zhe QIN, Kai WANG. C-band navigation signal modulation mode and performance evaluation of BeiDou system[J]. Systems Engineering and Electronics, 2022, 44(12): 3800-3810.

图/表 17

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候选信号		OOBE/dBc			PFD/(dBW/m²)
		RAS	上行信号	MLS	RAS	MLS
		载波频率5 019.861/5 022.93 MHz
BPSK(10)		-20.842 5	-16.278 1	-13.517 8	-130.194 6	-148.497 8
BPSK(10)		-21.146 1	-16.842 7	-13.113 9	-130.498 2	-139.234 4
MSK(10)		-29.735 7	-17.640 6	-20.487 6	-139.087 9	-139.753 0
MSK(10)		-33.823 5	-25.582 6	-13.174 3	-143.175 6	-133.445 2
GMSK(10)		-41.222 5	-23.344 2	-25.244 1	-150.574 6	-144.930 7
GMSK(10)		-40.668 7	-28.299 6	-18.683 9	-150.020 8	-135.020 8
QM2RC(10)		-41.215 0	-17.288 8	-20.264 7	-150.567 2	-139.524 8
QM2RC(10)		-44.573 9	-24.363 6	-13.788 1	-153.926 1	-133.850 1
BM2PSWF(20)	C=1	-45.065 8	-27.005 0	-30.370 9	-154.418 0	-148.488 0
	C=1	-45.178 0	-34.352 5	-19.952 6	-154.530 2	-135.740 6
	C=2	-41.060 8	-20.455 1	-22.083 7	-150.413 0	-142.041 7
	C=2	-43.373 4	-24.785 0	-17.166 9	-152.725 6	-135.220 3
QM2PSWF(10)	C=4	-41.266 1	-17.752 5	-20.750 7	-150.618 3	-140.002 1
	C=4	-44.519 9	-24.846 0	-14.179 1	-153.872 1	-134.137 3
	C=6	-35.882 7	-14.685 4	-17.116 7	-145.234 9	-137.213 8
	C=6	-41.882 2	-20.440 6	-11.876 8	-151.234 4	-132.793 7
平均差值		-2.359 4	-5.632 9	5.987 5	-2.358 9	7.626 5

信号类型	接收机带宽为20 MHz对应的Gabor带宽/MHz	Gabor带宽性能排序
BPSK(10)	3.256	8
MSK(10)	4.336	1
GMSK(10)	3.449	6
QM2RC(10)	4.007	3
BM2PSWF(20) C=1	3.428	7
BM2PSWF(20) C=2	3.484	5
QM2PSWF(10) C=4	3.936	4
QM2PSWF(10) C=6	4.297	2

信号类型	平均多径误差峰值/m	抗多径干扰性能排序
BPSK(10)	3.643	8
MSK(10)	2.933	2
GMSK(10)	3.492	6
QM2RC(10)	2.995	3
BM2PSWF(20) C=1	3.533	7
BM2PSWF(20) C=2	3.427	5
QM2PSWF(10) C=4	3.029	4
QM2PSWF(10) C=6	2.865	1

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北斗系统C波段导航信号调制方式及性能评估

C-band navigation signal modulation mode and performance evaluation of BeiDou system

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