系统工程与电子技术 ›› 2026, Vol. 48 ›› Issue (6): 2113-2121.doi: 10.12305/j.issn.1001-506X.2026.06.32

• 通信与网络 • 上一篇    下一篇

基于UNB的高精度测距通信复合信号设计

马若凡(), 贺成艳, 张兆林, 孙延栋, 陶明亮, 王伶   

  1. 西北工业大学电子信息学院,陕西 西安 710129
  • 收稿日期:2025-04-02 修回日期:2025-06-15 出版日期:2026-06-25 发布日期:2025-11-07
  • 通讯作者: 贺成艳 E-mail:maruofan02@mail.nwpu.edu.cn
  • 作者简介:马若凡(2002—),女,硕士研究生,主要研究方向为通导一体化信号设计
    张兆林(1978—),男,副教授,博士,主要研究方向为通信抗干扰、阵列信号处理以及多媒体通信
    孙延栋(1993—),男,博士,主要研究方向为卫星导航抗干扰、阵列信号处理、阵列重构优化
    陶明亮(1989—),男,教授,博士,主要研究方向为智能探测与侦察、智能抗干扰信号处理
    王 伶(1978—),男,教授,博士,主要研究方向为卫星通信与卫星导航、可靠通信传输与组网、智能探测与侦察、阵列天线与电磁计算
  • 基金资助:
    国家自然科学基金(12273046,62271412)资助课题

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

Ruofan MA(), Chengyan HE, Zhaolin ZHANG, Yandong SUN, Mingliang TAO, Ling WANG   

  1. School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710129,China
  • Received:2025-04-02 Revised:2025-06-15 Online:2026-06-25 Published:2025-11-07
  • Contact: Chengyan HE E-mail:maruofan02@mail.nwpu.edu.cn

摘要:

频谱资源日益紧张,测距通信复合系统对高频谱利用率和高精度定位需求愈发迫切。针对传统系统频谱利用率低、复杂环境下易被干扰等问题,提出基于全跳变多元位置相移键控(m-ary position phase shift keying,MPPSK)调制的测距通信复合信号设计,与传统调制相比,该信号带宽极窄且在低信噪比下的时延估计和相干解调有明显优势。仿真结果表明,信号?60 dB带宽约为1 kHz,频带利用率为31.25 bit/s/Hz,低信噪比下时延估计均方根误差和相干解调误码率分别可达到${10^{ - 9}}$ s和${10^{ - {\text{3}}}}$。外场实测结果表明,待测点距离3个发送台分别为53 km、77 km、96 km,定位均方根误差为48.523 m。研究成果可用于完成远距离高精度测距通信功能,此外信号包络恒定,可寄生在公开的调频、调幅信号中,不影响宿主信号的同时实现隐蔽传输。

关键词: 测距通信复合系统, 超窄带调制, 全跳变多元位置相移键控, 广义互相关时延估计

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

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