CALIBRATION SYSTEMS AND METHODS FOR SENSOR PAYLOADS

摘要

The present disclosure provides notably a calibration system suitable for in-flight calibration of a sensor payload. The calibration system comprises an emitting object being configured for emitting in a first emitting spectral band and in a second emitting spectral band a predetermined pattern comprising a plurality of lighted areas on a homogeneous background; and a collimation optical unit configured for setting the emitting object at infinity.

主权项

1. A payload system comprising:
a first imaging sensor sensitive in a first receiving spectral band; a second imaging sensor sensitive in a second receiving spectral band; a calibration system suitable for in-flight calibration of the sensor payload system comprising:
an emitting object being configured for emitting in a first emitting spectral band and in a second emitting spectral band a predetermined pattern comprising a plurality of lighted areas on a homogeneous background; anda collimation optical unit configured forsetting the emitting object at infinity; wherein the emitting spectral bands are overlapping the receiving spectral bands and the first and second imaging sensors or the calibration system are relatively configured movable within the payload system so as to enable, upon request or periodically, optical alignment between said first and second imaging sensors and said calibration system thereby allowing simultaneous imaging of the emitting object through the optical collimation unit; and wherein the payload system is further configured to calculate a linear transformation relating images acquired by the first and second imaging sensors for correcting relative displacements of the first and second sensors, thereby determining the registration parameters between the first and second imaging sensors.