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On November 26, 2005, the back-up solar array drive on Landsat 5 began exhibiting unusual behavior. The solar array drive maintains the proper pointing angle between the solar array and the sun. The rotation of the solar array drive became sporadic and the solar array was not able to provide the power needed to charge the batteries. Maintaining power to the batteries is critical to sustain proper operation of the spacecraft. The primary solar array drive failed under similar circumstances last January. As a result of this current situation, imaging operations will be suspended for at least the next two weeks or until attempts to solve the problem have been resolved.
Landsat 5, launched in March 1984, has performed far beyond its three-year design lifetime and has continued to collect global land surface coverage. Over 125,000 images, from the Chernobyl disaster to Hurricane Katrina, have proven invaluable for identifying the impact of natural and human-induced changes. Landsat 5 and Landsat 7 together provided full global coverage of the Earth’s surface every eight days.
The Landsat Program is the longest running program providing vital images of the Earth’s surface from space. The first Landsat satellite was launched in 1972 and since then, Landsat satellites have been providing a constant stream of moderate-resolution images. In 1999, the Landsat Program took a giant leap forward technologically with the launch of Landsat 7. The instruments on the Landsat satellites have acquired millions of images of the surface of the planet, providing a unique resource for scientists who study agriculture, geology, forestry, regional planning, education, mapping and global change research.
The Landsat Program is a joint initiative of USGS and NASA to gather Earth resource data using a series of satellites including Landsats 5 and 7. NASA is responsible for developing and launching the spacecrafts, while the USGS is responsible for flight operations, maintenance, and management of all data reception, processing, archiving, product generation, and distribution. The primary objective of the Landsat Program is to ensure a consistent, calibrated collection of Earth imagery that can be used to scientifically measure change over decades and beyond. Landsat’s global survey mission is to repeatedly capture images of the Earth’s land mass, coastal boundaries, and coral reefs; and to ensure the data acquired are of maximum utility in supporting the scientific objectives of monitoring changes in the Earth’s land surface and associated environment.
Updates and further information are available at landsat.usgs.gov.
GISuser Spotlight... Twitter clients for the Google G1 and Android mobile smart phones - I’m currently using the G1 as my main/only mobile device - it’s a perfect time for such a challenge because I’m also traveling and away from the office so there are always hiccups and glitches that can occur under such circumstances - a perfect time for a test!
The 2009 NAVTEQ LBS Challenge a look at the semi finalists, the Winning apps, and the LBSzone picks! At the CTIA Wireless event in Las Vegas, NAVTEQ held the award ceremonies for their 6th LBS Challenge, a competition designed to stimulate interest in location services and encourage developers to create innovative location-aware applications. We look at the state of LBS, the TOP apps, the winners, and our own top picks!
Economic Stimulus Project areas that may create GIS/Geo Tech Opportunities - Like many of you, we haven't really had time to go through the entire 1,071 page Detailed List of Spending - you can view and download the entire document at ProRepublica. We did take a little time, however, to go through this fine summary.
ESRI Business GIS Summit, July 12-15, 2009 · San Diego, CA - This combination provides an unprecedented opportunity to learn how GIS addresses today's business challenges. If you're interested in business GIS as a manager, executive, or user, there's no better event to attend.vealed.
ESRI International User Conference, July 13-17, 2009 · San Diego, CA - ESRI customers across the globe are invited to register to attend the world's largest gathering of GIS professionals.
Webinar: Google Earth For Your Government Agency - Join Google and DLT an informative webinar on Tuesday, June 30th from 2-3 ET to learn more about how the Google Earth Enterprise solution is helping government agencies to collaborate, and take faster, more informed action.
Is your LizardTech Lizard star material? SHOW US and you could win a new GPS system. Simply snap a creative photo of your favorite, authentic LizardTech Collectable Lizard and see how it measures up. Photos will be featured on the official LizardTech Flickr page and voted on by viewers everywhere. Submit yours today and win!
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