eng
two-point calibration
adjustment of the relationship between the input signal and the output response of a radiometer using two distinct input stimuli
Note 1 to entry: Assuming a linear receiver, all possible input signal levels can now be retrieved from the radiometer output responses.
Note 2 to entry: In the case of an external end-to-end calibration, the input signal equals the antenna temperature of the radiometer.
[SOURCE: ISO/TS 19159-4:2022, 3.42]