A prototype of super-synthesis radiometer for field imaging experiments

The authors made a prototype interferometric radiometer for field experiments of supers-synthesis imaging. The radiometer has 17 interferometers, which can receive the radiation from the ground in the band of 6.6 GHz. The multiple interferometers are aligned across the track for getting 2-dimensional images. It is also used as an ordinary multiple interferometers. The radiometer has a calibration circuit composed of a noise source, a signal divider and RF switches. The configuration and function of the radiometer system and the methods of field experiment and calibration are described.