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Transmitter and receiver design of an experimental airborne synthetic aperture radar sensor

机译：实验性机载合成孔径雷达传感器的发射器和接收器设计

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An Experimental Airborne Synthetic Aperture Radar (SAR) Sensor has been designed and,developed at Multimedia University, Malaysia. The airborne system is an inexpensive C-band, single polarization, linear-FM airborne radar sensor. An innovative cancellation network is implemented to overcome the poor isolation of the circulator thus allow a single antenna to be used for transmitting and receiving the radar signal. The system will be used for monitoring and management of earth resources such as paddy fields, oil palm plantation and soil surface. This paper highlights the design and development of the SAR transmitter and receiver, as well as the evaluation result of the sensor. Calibration has been performed in the laboratory to verify the performance of the radar sensor. External calibration is accomplished by using three artificial point targets, i.e., 12” conducting sphere, 4”×8” dihedral corner reflector and 8” trihedral corner reflector. The field measurements are conducted in an empty car park, which is a low reflection outdoor environment. Both range detection and radar cross section (RCS) measurement capability are verified in the field experiments.
机译：实验性机载合成孔径雷达（SAR）传感器是由马来西亚多媒体大学设计和开发的。机载系统是一种廉价的C波段，单极化，线性FM机载雷达传感器。实现了一种创新的消除网络，以克服环行器的不良隔离，从而允许使用单个天线来发送和接收雷达信号。该系统将用于监测和管理水田，油棕种植园和土壤表面等地球资源。本文重点介绍了SAR发射器和接收器的设计和开发以及传感器的评估结果。已经在实验室进行了校准，以验证雷达传感器的性能。外部校准是通过使用三个人造点目标完成的，即12“导电球，4”×8“二面角反射器和8”三面角反射器。现场测量是在空旷的停车场中进行的，该停车场是低反射室外环境。范围检测和雷达横截面（RCS）测量能力均在现场实验中得到验证。

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