RADIOMETER SYSTEM AND METHOD OF CALIBRATING RADIOMETER RECEIVER

摘要

The present invention relates to a radiometersystem comprising a radiometer receiver, a switch forselecting between an antenna mode and a calibrationmode, a microwave active noise source, a driver and amicroprocessor. The present invention further relatesto a method of calibrating a radiometer receiver, and amethod of determining the noise figure of a radiometerreceiver.