基于二次判决的差分匹配滤波器时间戳估计

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基于二次判决的差分匹配滤波器时间戳估计

宫峰勋^a，张万红^a，马艳秋^b

（taptap下载安装安卓a.电子信息与自动化学院；b.科技处，天津300300）

收稿日期:2017-03-08 修回日期:2017-04-18 出版日期:2018-02-24 发布日期:2018-01-17
作者简介:宫峰勋（1965—），男，吉林九台人，教授，硕士，研究方向为通信与信息系统、民航通信导航监视及多源数据融合.
基金资助:
国家自然科学基金项目（U1533108，U1233112）

Timestamp estimation of differential matching filter based on quadratic decision

GONG Fengxun^a, ZHANG Wanhong^a, MA Yanqiu^b

(a. College of Electronic Information and Automation; b. Science and Technology Department, CAUC, Tianjin 300300, China)

Received:2017-03-08 Revised:2017-04-18 Online:2018-02-24 Published:2018-01-17

摘要/Abstract

摘要： 在深入分析差分匹配滤波器法标记应答信号前导单脉冲过0 点时间戳的基础上，针对高信噪比情况下到达时间（TOA，time of arrival）检测精确度依然存在的问题，提出了基于二次判决的差分匹配滤波器过0 点检测与时间戳标记方法，并通过差分匹配滤波器输出信号的过0 点分布尧TOA 测量精确度和多点定位（MLAT，multilateration）系统定位精确度三方面的仿真实验验证了改进方法在过0点检测的准确性和稳健性。模拟仿真结果表明：改进算法具有时间戳标记准确度高尧TOA 测量精确度高和初始定位精确度高的优点，且随着输入信号信噪比的增大，改进算法的TOA 检测均方根误差趋近于0。在信号信噪比大于20 dB 时，应用于MLAT 系统的定位误差小于0.87 m。

关键词: 差分匹配滤波器法, 时间戳标记, MLAT, 定位性能

Abstract: Timestamped mark of single-pulse zero-crossing of differential response filter is analyzed aiming at the problem of TOA detection accuracy under high SNR(signal-to-noise ratio). Improved differential matching filter based on quadratic decision is proposed. Through zero-crossing distribution, TOA measurement of root mean square error and MLAT system positioning accuracy are employed to verify the improved algorithm in zero-crossing detection accuracy and robustness. Simulation results show that the improved algorithm has higher accuracy of timestamp mark, TOA measurement and initial positioning accuracy. With the increase of SNR of the input signal, the improved square root error of improved algorithm approaches to zero. When the SNR is greater than 20 dB, the accuracy of MLAT system is less than 0.87 m.

Key words: differential matching filter method, timestamp mark, MLAT, positioning performance

中图分类号:

宫峰勋，张万红，马艳秋. 基于二次判决的差分匹配滤波器时间戳估计[J]. taptap下载安装安卓学报.

GONG Fengxun, ZHANG Wanhong, MA Yanqiu. Timestamp estimation of differential matching filter based on quadratic decision[J]. .

参考文献

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