| 摘要: |
| 高频地波雷达的“距离-多普勒”(Range-Doppler, R-D)数据与“恒虚警率”(Constant False-Alarm-Rate, CFAR)检测结果数据存在非直观性的问题, 本文针对此问题, 分析了地波雷达回波数据特点以及结果形式, 研究了采用地理信息系统(Geographic Information System, GIS)技术对回波数据进行显示分析, 对R-D 与CFAR 检测结果进行表达, 实现高频数据在GIS 环境下的表达处理与显示。本文采用GIS的栅格表达“距离-多普勒”数据, 采用矢量数据结构表达CFAR 检测结果, 实现了地波雷达检测信息的直观显示; 研究了高频地波雷达数据中特定距离一维谱信号的提取, 实现了基于距离值的目标CFAR 检测查询; 针对雷达数据量大、处理时间长的问题, 采用多线程处理机制实现了高效实时显示和分析。 |
| 关键词: 高频地波雷达 距离-多普勒 CFAR(Constant False-Alarm-Rate) 地理信息系统(Geographic Information System, GIS) |
| DOI：10.11759/hykx20140704003 |
| 分类号: |
| 基金项目:海洋公益性行业科研专项: 海上船只目标星-机-岛立体监视监测技术系统(201505002) |
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| Expression and display of echo signal of HF surface wave radar based on GIS |
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| Abstract: |
| The “range-doppler”(R-D) and constant-false-alarm-rate(CFAR) data of HF surface wave radar are digital and non-imaging data. In this paper, the characteristics and output mode of HFSWR echo signal data were analyzed and the ways of displaying echo signal data were studied based on GIS. The R-D and CFAR data were analyzed and the expression processing and display of the high frequency signal in a GIS environment were successfully achieved. In this paper, the raster GIS expression “distance-Doppler” data and the CFAR detection results expressed by vector data structure, were used to achieve the query of distance value and CFAR detection goal. The R-D and CFAR data were presented through drawing one-dimensional doppler line. Because echo signal data is large and time is long, multi-threading mechanism was used to achieve efficient real-time display and analysis. |
| Key words: HF surface wave radar range-doppler constant false-alarm-rate geographic information system |
