![]() The AOCS (Attitude and Orbit Control Subsystem) consisted of four reaction wheels, enabling three-axis control, in addition to a Xenon propulsion system and attitude sensing provided by redundant star sensors and magnetometers. The bus had a launch mass of 156 kg, and dimensions 0.78 m x 0.938 m x 1.17 m. The RapidEye constellation used a minisatellite bus developed by SSTL (Surrey Satellite Technology Ltd.), known as MicroSat-150, or SSTL-150. The constellation had an orbital period of 97 minutes, and a repeat cycle of one day. ![]() The RapidEye constellation operated in a sun-synchronous orbit of altitude 622 km and inclination 98.7°, with the five minisatellites evenly spaced along a single orbital plane. REIS produced high resolution multispectral imagery with applications in agriculture, environment, forestry, mapping, intelligence and defence.Īcross its five channels (blue, green, red, red edge, near infrared), REIS had spectral coverage of 440 - 850 nm.REIS used a pushbroom scanning technique, with an IFOV (Instant Field of View) or spatial resolution of 6.5 m, and a FOV (Field of View) of ± 6.75° about nadir, which corresponds to a swath of more than 70 km at an orbital altitude of 622 km. Each RapidEye minisatellite carried a single instrument, REIS (RapidEye Earth Imaging System), a five channel VNIR (Very Near Infrared) radiometer.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |