Abstract
A novel bistatic measurement for calibration load used in prelaunch calibration for microwave radiometer carried on the Feng-Yun series satellite was preposed. The pyramidal metal calibration target which has the same structure to the periodic calibration load to be measured was introduced. Based on the three-dimension finite-difference time-domain (FDTD) method with perfectly matched layer (PML), the simulation results indicate that the novel calibration target has similar characteristics with the calibration load, and the power density distribution coupled by the horn antenna with a lens are also similar with each other, therefore using the pyramidal metal array can reduce the error caused by the antenna coupling. For the given calibration load, by taking the pyramidal metal array instead of the metal plane as the calibration target, an improvement of one order of magnitude will be achieved without considering the direct coupling between the transmitting and receiving antennas.
| Original language | English |
|---|---|
| Pages (from-to) | 279-282 |
| Number of pages | 4 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 37 |
| Issue number | 3 |
| State | Published - Mar 2011 |
Keywords
- Calibration
- Microwave measurement
- Radiometers
- Remote sensing
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