Nasa Defense Meteorological Satellite Program Dmsp Operational Linescan System Ols
DMSP Satellite F8 Source/Platform Document Defense Meteorological Satellite Program (DMSP) Satellite F8 Langley DAAC Source/Platform Document Summary: This document contains information about the DMSP F8 Satellite. The DMSP F8 satellite is a in a near circular, sun synchronous, polar orbit. The DMSP mission is to provide global visible and infrared cloud data and other specialized meteorological, oceanographic and solar-geophysical data in support of world wide Department of Defense (DoD) operations. A description of the mission is provided as is information about the spacecraft and its environment. The ground data system is briefly described. Table of Contents.
• • • • • • Defense Meteorological Satellite Program (DMSP) Block 5D-2 Satellite F8, DMSP F8 DMSP, originally known as the Defense System Applications Program (DSAP) and the Defense Acquistion and Processing Program (DAPP), is a long-term USAF effort in space to monitor the meteorological, oceanographic and solar-geophysical environment of the Earth in support of DoD operations. All spacecraft launched have had a tactical (direct readout) and a strategic (stored data) capacity. In December 1972, DMSP data was declassified and made available to the civil/scientific community. The USAF maintains an operational constellation of two near-polar, sun-synchronous satellites.
Satellite The DMSP program office is located at the Space Systems Division, Air Force Material Command, Los Angeles Air Force Station, Los Angeles, California. Funding is provided by the Department of Defense (DoD). The DMSP mission is to provide global visible and infrared cloud data and other specialized meteorological, oceanographic and solar-geophysical data in support of world wide Department of Defense (DoD) operations.
DMSP Satellite F8 was built by General Electric's Astro-Space Division (now part of Martin Marietta Astro Space). It was launched on June 19, 1987 from Vandenberg AFB, California using an Atlas E rocket.
The spacecraft is 3.5 meters in length with a diameter of 1.2 meters with an on-orbit mass of 725 kilograms. It has a design lifetime of 30 months. Power is provided though a 9.29 sq-m solar cell panel. Attitude is controlled using momentum wheels and magnetic coils using a strap-down star sensor and gyros as the reference. • Pointing Accuracy: 0.01 deg (primary), 0.12 deg (backup) • Stability: maximum rate - 0.03 deg/sec per axis. Short term changes in attitude are measured using three orthogonal gyroscopes. A strap down star sensor is used to bound the effects of gyroscope drift.
The desired attitude is computed based upon a star catalog and an ephemeris table uplinked to the spacecraft daily. Three-axis attitude control is maintained in the orbital configuration by automatic momentum exchange between three momentum wheels. Gharana Mogudu Hd Video Songs.
Autocad Architecture Activation Code 2013. The image was created with data from the Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS). The OLS sensor orbits Earth, acquiring one swath, or area, of data at a time.
Onboard magnetic coils provide controlled interaction with the earth's magnetic field to prevent the accumulation of wheel secular momentum. Operations of these coils is under control of the closed loop spacecraft attitude control system. Both the momentum wheels and gyroscopes are backed up by a fourth skewed unit for redundancy.