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- Can we trust our GPS devices?
- In recent years, we have become increasingly dependent on applications using the Global Positioning System GPS, such as railway control, highway traffic management, emergency response or commercial aviation. But in a very short news release, the American Geophysical Union AGU warns us that we can't always trust our GPS gadgets...
- Blog posts 2008-06-10
- COSMIC satellites to study atmosphere
- If all goes well, the COSMIC six-satellite array will be launched today at 5:10 PM PDT by a Minotaur rocket from Vandenberg Air Force Base. The $100 million constellation will use the U.S. Global Positioning System GPS signals to track hurricanes, climate change, and space weather. And these satellites will...
- Blog posts 2006-04-14
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- Atmospheric Phenomena Deduced From Radiosonde and GPS Occultation Measurements for Various Application Related Studies
- Troposphere is the lowest portion of earth's atmosphere and hold approximately 80% of atmospheric airmass. The radio wave propagation through troposphere depends on refractive index of the medium. The refractive index of the medium depends on atmospheric pressure, temperature and humidity. The properties of radio wave make it an efficient...
- White papers 2009-02-01
- Kagayaki IV Navigation Edition 4.1 (Windows)
- Your screen becomes a night sky with a window of 530,000 stars and 10,000 nebula and clusters are in real time. You can go in the past and the future when you click the panel clock. If you see full automatic Astronomical Calendar, you know when an astronomical show (moon...
- Software downloads 2004-05-13
- Kagayaki IV Professional Edition 4.1 (Windows)
- Planetarium which is "Telescope controllable". Your screen becomes a night sky with the window of beautiful, dark red. 18,000,000 stars (After distributing CD-ROM) and 10,000 nebula and clusters are in real time displayed. You can go in the past and the future when you click the panel clock. If you...
- Software downloads 2004-05-13
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