Patent ID: 6730909
Filing Date: 2004-05-04
Classification: G01J,H04N

Abstract:
A method of compensating a radiation sensor for changes in at least one operational characteristic of the sensor due to a temperature variation of the sensor, wherein the sensor includes a plurality of radiation detectors and the at least one operational characteristic of the sensor that changes due to the temperature variation of the sensor includes at least one of an offset error variation and a gain variation associated with the plurality of radiation detectors, the method comprising acts of:a) dynamically adjusting at least one calibration parameter associated with the radiation sensor based on the temperature variation of the sensor, wherein the at least one calibration parameter associated with the sensor includes at least one of an offset error value for each radiation detector and a gain value for each radiation detector, and wherein the act a) includes an act of dynamically adjusting at least one of at least one offset error value and at least one gain value based on the temperature variation of the sensor to compensate for a respective at least one of the offset error variation and the gain variation; and b) applying the dynamically adjusted at least one calibration parameter to at least one output signal of the radiation sensor.