基于UNB的高精度测距通信复合信号设计

doi:10.12305/j.issn.1001-506X.2026.06.32

Abstract

Abstract:

With the increasing shortage of spectrum resources, the demand for high spectrum utilization and high-precision positioning in ranging and communication composite systems is becoming more and more urgent. Aiming at the problems of low spectral efficiency and easy interference in complex environment of traditional system, a design of ranging and communication composite signal based on full-hopping m-ary position phase shift keying （MPPSK） modulation is proposed. Compared with the traditional modulations, the bandwidth of the signal is very narrow and it has obvious advantages in time delay estimation and coherent demodulation at low signal-to-noise ratio. The simulation results show that the signal bandwidth of ?60 dB is approximately 1 kHz and the spectral efficiency is 31.25 bit/s/Hz. Under the low signal-to-noise ratio, the root mean square error of delay estimation and the bit error rate of coherent demodulation can reach ${10^{ - 9}}$ s and ${10^{ - 3}}$, respectively. The field measurement results show that the distances from the test point to the three transmitting stations are 53 km, 77 km, and 96 km, respectively, and the positioning root mean square error is 48.523 m. The research results can be used to achieve long-distance high-precision ranging and communication functions. The signal envelope is constant and can be parasitically carried in public frequency modulation and amplitude modulation signals, realizing covert transmission without affecting the host signal.

Key words: ranging and communication composite system, ultranarrow band modulation, full-hopping m-ary position phase shift keying（MPPSK）, generalized cross-correlation time delay estimation

CLC Number:

TN 914

Ruofan MA, Chengyan HE, Zhaolin ZHANG, Yandong SUN, Mingliang TAO, Ling WANG. Design of high-precision ranging and communication composite signal based on UNB[J]. Systems Engineering and Electronics, 2026, 48(6): 2113-2121.

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参数符号	参数名称	数值
$N$	一个符号周期所含的载波周期数量	192
$M$	一个符号周期内相位跳变的次数	64
$K$	相位跳变持续的载波周期数量	3
${f_{{\mathrm{c}}1}}$/ kHz	发射台1发射频点	1500
${f_{{\mathrm{c}}2}}$/ kHz	发射台2发射频点	900
${f_{{\mathrm{c}}3}}$/ kHz	发射台3发射频点	800
${f}$/ MHz	接收机采样率	125
${L_1}$/ km	待测点距离发射台1	53.333
${L_2}$/ km	待测点距离发射台2	77.012
${L_3}$/ km	待测点距离发射台3	96.639

发送台	时延估计RMSE/ns
1	129.051
2	236.880
3	278.105

参数	试验结果
定位误差平均值/m	46.189
定位误差RMSE/m	48.523
通信数据解码	均能正确解调

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Design of high-precision ranging and communication composite signal based on UNB

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