摘要
提出了一种实验室测试微波后向散射系数的分束方法，采用一次调零、仪器固定及样品转动的实验系统设计，可以对材料不同角度的后向散射系数进行测量。利用分束法测试了混凝土空白样品、不同尺寸的鹅卵石表面样品的微波后向散射系数，观察了不同入射角的变化规律。该方法克服了传统收发天线并排时的串扰问题，而且可使入射与散射波束严格重合，具有成本低，性能稳定的特点。该方法及其结果为微波遥感定标及SAR图像解译提供了实验室手段。
A beam split method is put forward for measurement of microwave backscattering coefficient in room. Technique of zero once, fixed instrument and sample rotating, is used in experiment system disign, the microwave backscattering coefficient in different inclinations can be measured in this system. Several concrete samples with different surface have been tested for the microwave backscattering coefficient, the changing regulation with different angle of incidence has been found. This method overcomes the harass problem between emitting and receive antenna,can gives a superposition with incidence wave and scatter wave, has a low cost and a steady performance. The technique and the data are useful for microwave remote scaling and explanation of SAR images.
出处
《后勤工程学院学报》
2010年第1期58-61,共4页
Journal of Logistical Engineering University
基金
总后勤部基建营房部资助项目(营200402)
关键词
分束法
微波后向散射系数
测试
混凝土
beam split method
microwave backscattering coefficient
measurement
concrete
