基于多普勒天气雷达的地物识别研究

Research on ground-object recognition method based on Doppler weather radar

当前的地物识别方法对地物反馈波特征掌握不准确,识别效果不好,对此,提出基于多普勒天气雷达的地物识别方法。将天气雷达信息点分为垂直形态、水平形态、纹理形态、垂直速度、水平速度、谱宽速度六个特征,通过查阅历史资料并结合反馈波的多普勒效应曲线,统计地物与水域特征差别。对地物与水域的折射率进行修正,根据目标物体与地物反馈波频率的不同,将混合在地物识别结果中的水域和目标物体提取出来,增加地物识别准确率。实验结果表明,所提方法拥有很好的识别效果。

The current ground-object recognition method has inaccurate mastery for ground-object feedback wave featureand poor identification effect,so a ground-object recognition method based on Doppler weather radar is put forward.The weatherradar information points are divided into the vertical form,horizontal form,texture form,vertical speed,horizontal speed andspectrum width speed.The historical data is looked up and the Doppler effect curve of feedback wave is combined to survey thefeature difference between ground-object and water area,and correct the refractive indexes of the ground-object and water area.According to the feedback wave frequencies difference between the target object and ground-object,the water area and target object mixed in the ground-object recognition results are extracted to improve the recognition accuracy of ground-object.The experimental results show that the proposed method has better recognition effect.