backtop


Print 47 comment(s) - last by MGSsancho.. on Feb 22 at 11:37 PM

The Chinese navigation system will include an encrypted channel as well

People all over the planet depend on the GPS satellite positioning system for all sorts of things from navigating in their cars to keeping up with equipment and personnel. China says that it intendeds to have an operational GPS system covering all of Asia by 2010.

Despite the 2010 date specified, Chinese officials aren’t giving up much information. In fact officials from Japan say that it and China have had no talks concerning interoperability of the two nations GPS satellite systems. This is despite the fact that both China and Japan are members of the International Committee on Global Navigation Satellite Systems (ICGNSS) that was founded to ensure global interoperability of navigation satellite networks.

China has also not yet completed frequency coordination with the other ICGNSS member nations including the U.S., Europe, Russia and others. According to Space.com, Chinese officials said at the Toulouse Space Show that China’s global Compass/Beidou system would be fully compatible with the U.S. GPS, European Galileo, and Russian Glonass global navigation constellations.

Japanese officials are concerned about the Chinese Asia regional system because Japan is developing its own regional system called the Quazi Zenith Satellite Systems which will have three satellites in a highly elliptical orbit with an apogee over Japan and Asia. According to Satoshi Kogure from the Japan Aerospace Exploration Japanese Agency some in Japan feel the Chinese navigation satellite system is an important issue for Japanese national security.

The head of the Galileo unit at the European Commission financing the development of the Galileo constellation notes that when the U.S., Russian, Chinese and European medium Earth satellites are added together there could be 120 operational navigation satellites in medium Earth orbit.

The Chinese satellite system will also reportedly include an encrypted channel, presumably for use by the Chinese military.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

GPS
By sapster86 on 5/8/2008 2:58:04 PM , Rating: 2
Yes GPS stands for Global Positioning System but only the original american Navstar satellite constellation is actually "GPS".

GPS has just become an accepted phase to encorporate all satellite navigation systems although Glonass, Galileo and all the rest are their own independent systems. kind of like how "hoover" covers all vacume cleaners.

Why would other countries want their own systems?
* America only recently turned off selective availability on their GPS signal which degraded the quality of the system to civilians and enermy govenments, they could reactiveate this at any time.
* Counties like china want to be able to have very accurate GPS for weapons and special forces.
* the more satellites their are in the sky and the better aranged they (PDOP) are the better quality signal you can achieve, this will be very benificial (lucky to get 9 or 10 satellites in view at the moment)




"We are going to continue to work with them to make sure they understand the reality of the Internet.  A lot of these people don't have Ph.Ds, and they don't have a degree in computer science." -- RIM co-CEO Michael Lazaridis











botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki