Radiometric calibrations for the Earth radiation budget experiment.

The earth radiation budget (ERB) experiment is scheduled to be flown aboard the NIMBUS F satellite that is to be launched in mid-1974. This experiment includes channels, to measure solar radiation, earth-reflected radiation (albedo), and earth-emitted long-wave radiation. The calibration techniques and the standards employed are included in the topics of this paper. Problems associated with achieving the desired levels of confidence for a multifaceted, high accuracy satellite experiment are discussed and some results of preliminary calibrations are presented.