Landsat-8 is assembled by Orbital Sciences Corporation under contract from NASA on the basis of its own Orbital LEOSt platform. To optimize the accuracy of determining the orientation of the satellite, three high-precision astrodetectors (ar-3, two of which operate in active mode), a scalable inertial guidance system SIRU (Scalable Inertial Reference Unit), GPS receivers and two triaxial magnetometers are used. Improved performance of the target instruments reduces radiometric distortion compared to previous Landsat satellites, and the use of more advanced CCD devices improves signal-to-noise ratio and image quality. The instruments measure 4096 different levels of reflected light, while the ETMP onboard camera on the Landsat-7 satellite could measure 256 different levels.
Characteristics of the space satellite
| Operating country | USA |
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