Calibration, Coherence, and Consilience in Radiometric Measures of Geologic Time

Radiometric Self Calibration

A simple algorithm is described that computes the radiometric response function of an imaging system, from images of an arbitrar), scene taken using different exposures. The exposure is varied by changing either the aperture setting or the shutter speed. The algorithm does not require precise estimates of the exposures used. Rough estimates of the ratios of the exposures (e.g. Fnumber settings ...

Radiometric Calibration for AgCam

The student-built Agricultural Camera (AgCam) now onboard the International Space Station observes the Earth surface through two linescan cameras with Charge-Coupled Device (CCD) arrays sensitive to visible and near-infrared wavelengths, respectively. The electro-optical components of the AgCam were characterized using precision calibration equipment; a method for modeling and applying these me...

Radiometric Calibration of Als Intensity

We have developed a new concept of empirical calibration scheme for airborne laser scanner (ALS) intensity by means of portable brightness calibration targets, which can be laid out in the flight target area. The accurate radiometric calibration of these targets is based on laboratory measurements with CCD-based laser backscatter instrument and terrestrial laser scanner reference measurements i...

The Radiometric Calibration of SOHO

Estimation of Calibration Parameters 2 RADIOMETRIC AND PHASE CALIBRATION

The objectives of this memo are threefold. First, the antenna coordinate system used for antenna gain, steering computations and image time predictions is defined. Secondly, the look vector along the Doppler centroid (or locus of points of maximal gain at a specified range) is derived in terms of the yaw, pitch and roll of the platform, the antenna azimuth steering angle and the mounting angle ...