system improvement , measurement and analysis of C-band ARC

• Main Authors: Wu Yuxuan, 吳宇軒
• Other Authors: K.S Chen
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/48535643985449799965

碩士 === 國立中央大學 === 通訊工程研究所 === 93 === We have already developed the active radar calibrator in C-band, the successful one can work in radiometric calibration for two satellites (ERS-2 and ENVISAT) now. In order to calibrate the “K” constant precisely, the system gain and delay time of ARC should be considered in this work. Old active radar calibrator still has some problem and will be investigated in this thesis. Besides, we will revise the structure of ARC system to solve the problem in old one. On the other hand, some devises of ARC are designed including DRO and microstrip antenna of dual-polarization. The DRO replaces the signal generator and the microstrip antenna replaces the horn antenna for decrease the cost of this system. The two new devises of ARC will be more powerful when operating the ARC to calibrate the satellites. Moreover, the design of dual-polarization microstrip antenna can be applied in radiometric calibration of alternative and fully polarimetric satellites.