电信科学 ›› 2022, Vol. 38 ›› Issue (6): 100-110.doi: 10.11959/j.issn.1000-0801.2022153

• 研究与开发 • 上一篇    下一篇

简化频域Volterra级数的S模式信号接收系统特性

宫峰勋, 李建坤   

  1. 中国民航大学,天津300300
  • 修回日期:2022-06-10 出版日期:2022-06-20 发布日期:2022-06-01
  • 作者简介:宫峰勋(1965- ),男,中国民航大学教授、硕士生导师,主要研究方向为电磁辐射与电磁兼容、民航通信导航监视及多源数据融合等
    李建坤(1996- ),男,中国民航大学硕士生,主要研究方向为电磁辐射与电磁兼容
  • 基金资助:
    科技部重点研发计划项目(2018YFC0809500)

Characteristics of simplified frequency-domain Volterra series based S-mode receiver

Fengxun GONG, Jiankun LI   

  1. Civil Aviation University of China, Tianjin 300300, China
  • Revised:2022-06-10 Online:2022-06-20 Published:2022-06-01
  • Supported by:
    Key Research and Development Program of the Ministry of Science and Technology(2018YFC0809500)

摘要:

采用简化频域Volterra级数研究分析输入信号为S模式应答脉冲的多点定位(multilateration,MLAT)系统的非线性特性。首先以典型超外差接收系统为例,探索建立多点定位系统的简化频域Volterra级数模型和误差率模型;其次,研究建立基于核函数的S模式应答脉冲信号模型;最后分析输入基于核函数的S模式信号时,简化频域Volterra级数的S模式信号接收系统模型误差率。仿真结果表明,当输入基于核函数的S模式信号时,信噪比为15 dB的简化频域Volterra级数的接收系统模型误差率最小在23.23%以下;输入信噪比为16.25 dB的实际S模式测试信号时,该模型误差率最小在22%以下,小于误差率阈值。说明简化频域Volterra级数的接收系统模型可以准确地描述 S 模式信号接收系统的输出特性,为多点定位系统前导脉冲到达时间戳的识别奠定理论基础。

关键词: 简化频域Volterra级数, S模式信号, 非线性系统, 核函数

Abstract:

The nonlinear characteristics of multilateration(MLAT) system were analyzed by simplified frequency-domain Volterra series when the S-mode signal response pulse was input.Firstly, take the typical super heterodyne receiver system for example, the model based on simplified frequency-domain Volterra series and error rate model of MLAT system were explored and created.Secondly, the S-mode response pulse signal model based on kernel function was researched and established.Finally, the model error rate of S-mode signal receiver system based on simplified frequency-domain Volterra series was analyzed when the S-mode signal based on kernel function was input.The results show that the minimum error rate of the receiver system based on 15 dB SNR simplified frequency-domain Volterra series is less than 23.23% when the S-mode signal based on kernel function is input.When the actual S-mode test signal with 16.25 dB SNR is input, the minimum error rate of the model is less than 22%, which is less than the error rate threshold.It shows that the receiver system model based on simplified frequency-domain Volterra series can accurately describe the characteristics of S-mode signal receiver system, which provides the theoretical foundation for the identification of preamble arrival timestamp in MLAT system.

Key words: simplified frequency-domain Volterra series, S-mode signal, nonlinear system, kernel function

中图分类号: 

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