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地基真实孔径雷达精度验证方法与实验研究

张浩 杨晓琳 杨峰 张巴图 于正兴 马海涛

张浩, 杨晓琳, 杨峰, 张巴图, 于正兴, 马海涛. 地基真实孔径雷达精度验证方法与实验研究[J]. 矿业科学学报, 2021, 6(6): 721-729. doi: 10.19606/j.cnki.jmst.2021.06.011
引用本文: 张浩, 杨晓琳, 杨峰, 张巴图, 于正兴, 马海涛. 地基真实孔径雷达精度验证方法与实验研究[J]. 矿业科学学报, 2021, 6(6): 721-729. doi: 10.19606/j.cnki.jmst.2021.06.011
Zhang Hao, Yang Xiaolin, Yang Feng, Zhang Batu, Yu Zhengxing, Ma Haitao. Accuracy verification methods and experimental study of ground-based real aperture radar[J]. Journal of Mining Science and Technology, 2021, 6(6): 721-729. doi: 10.19606/j.cnki.jmst.2021.06.011
Citation: Zhang Hao, Yang Xiaolin, Yang Feng, Zhang Batu, Yu Zhengxing, Ma Haitao. Accuracy verification methods and experimental study of ground-based real aperture radar[J]. Journal of Mining Science and Technology, 2021, 6(6): 721-729. doi: 10.19606/j.cnki.jmst.2021.06.011

地基真实孔径雷达精度验证方法与实验研究

doi: 10.19606/j.cnki.jmst.2021.06.011
基金项目: 

国家重点研发计划 2017YFC0804603

国家重点研发计划 2018YFC0808402

山东省重大科技创新工程 2019JZZY020314

中央高校基本科研业务费专项资金 8000150A074

详细信息
    作者简介:

    张浩(1992—),男,河北邢台人,博士研究生,主要从事地基雷达系统设计、雷达数据处理与三维成像等方面的研究工作。Tel:15303199885,E-mail:zhstrive@126.com

  • 中图分类号: TN95

Accuracy verification methods and experimental study of ground-based real aperture radar

  • 摘要: 常规形变监测手段受限于数据精度、监测范围、适用环境等因素,严重制约滑坡、坍塌灾害的预警预报工作。基于差分干涉技术的微波遥感方法是进行非接触表面微小位移高精度监测的先进技术在应急救援、防灾减灾、矿山安全生产、边坡稳定性评估等方面均有有效应用。本文应用自研的地基真实孔径雷达系统,在分析信号模型的基础上,归纳了强散射特性目标回波数据处理流程,提出了适用于验证该类型雷达系统形变监测精度的方法。据此开展了基于三角板角反射器的点目标静止与位移实验,通过雷达回波幅值分析与点云数据拟合,判别预设目标空间位置并确定目标位移标准值,证明了所提方法的有效性和系统0.1 mm监测精度。在内蒙古黑岱沟露天煤矿进行边坡监测实验,结合若干点目标形变数据说明了系统良好的实用性。
  • 图  1  地基真实孔径边坡雷达工作原理

    Figure  1.  S-RAR working principle

    图  2  地基真实孔径边坡雷达回波数据处理流程

    Figure  2.  Flow chart for S-RAR echo data processing

    图  3  标准值误差分析

    Figure  3.  Standard value error analysis

    图  4  地基真实孔径边坡雷达系统组成

    Figure  4.  S-RAR system components

    图  5  监测精度验证流程

    Figure  5.  Flow chart for monitoring accuracy verification

    图  6  实验场景及其三维扫描结果

    Figure  6.  Experimental scene and TLS result

    图  7  角反和雷达坐标原点示意图

    Figure  7.  CR and radar coordinate origin diagram

    图  8  监测场景一维距离像

    Figure  8.  1D range profile of monitoring scenes

    图  9  角反目标回波分析

    Figure  9.  CR taarget echo analysis

    图  10  静止目标位移误差分析

    Figure  10.  Static target displacement error analysis

    图  11  目标复信号分析

    Figure  11.  Target complex signal analysis

    图  12  位移测量结果

    Figure  12.  Results of target displacement measurements

    图  13  目标位移测量误差分析

    Figure  13.  Error analysis of target displacement

    图  14  边坡监测实景

    Figure  14.  Real view of slope monitoring

    图  15  06:04~18:53时间段内边坡目标位移

    Figure  15.  Slope target displacement map in 06:04~18:53

    图  16  特征点位移测量结果

    Figure  16.  Results of feature target displacement measurements

    表  1  地基真实孔径边坡雷达技术参数

    Table  1.   S-RAR technical specifications

    频段/GHz 监测距离/km 水平监测范围/(°) 俯仰监测范围/(°) @1km分辨/(m×m×m)
    14~14.5 2 -120~120 -45~45 0.5×8.7×8.7
    下载: 导出CSV

    表  2  静止目标实验参数

    Table  2.   CR static experiment setting

    角反棱长/mm 信号带宽/MHz 频点数 测量周期/min
    300 500 2 401 5
    下载: 导出CSV

    表  3  地基真实孔径边坡雷达系统参数设置

    Table  3.   S-RAR system parameter setting

    载频/GHz 信号带宽/MHz 频点数 转台步进精度/(°)
    14.25 500 2 401 1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-02-27
  • 修回日期:  2021-03-22
  • 刊出日期:  2021-12-01

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