Print 6 comment(s) - last by MrPoletski.. on May 28 at 10:19 PM

NemeriX chip can receive signals from GPS, GLONASS and Galileo GPS systems at the same time

GPS-enabled products are increasingly common and GPS capability is one of the most popular features on current Smartphones. Adding GPS functionality to devices makes them more useful for consumers, but also makes them larger and consumer more power leading to reduced battery life.

Fabless semiconductor firm NemeriX has been granted U.S. patent number 7,358,896 covering its new multiband GNSS receiver. The receiver is capable of receiving parallel signals from GPS, GLONASS and Galileo satellite constellations.

The receiver is fully programmable and uses a single frequency synthesizer. The highly integrated design of the receiver allows NemeriX to reduce the silicon size and still acquire up to three signals on different frequency bands at the same time.

The receiver can also be programmed to tune to filtering levels and frequency plans as well. NemeriX says that the receiver was originally designed to meet the needs in the high-end and space market. The receiver will also allow manufacturers to address future consumer applications and provide new services in different bands like L2C. DailyTech first covered L2C in 2006 shortly after the U.S. government activated the first new satellite supporting the technology.

L2C was touted for its ability to deliver better communications via cell phone in areas where signals were unstable. The technology was also able to deliver better GPS signals for users in urban areas and indoors while requiring less power to receive the signal making for better battery life in mobile devices.

NemeriX VP marketing Lew Boore said in a statement, “By providing a highly integrated solution for multi-band signal environments, NemeriX is ready to deliver the next wave of GNSS performance. This latest technology innovation from NemeriX provides our customers with a future-proof platform for a greatly enhanced user experience, increased availability and accuracy for high demand applications, including emerging location based services such as pedestrian navigation and mobile social-based networking."

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Super accuracy?
By nitrous9200 on 5/28/2008 4:17:16 PM , Rating: 3
After all, GPS has about 30 satellites of its own plus all of the ones the other two systems use, so would this give you more accurate coordinates?

RE: Super accuracy?
By sapster86 on 5/28/2008 4:31:25 PM , Rating: 3
this shouldn't make it any more accurate... but it will mean less outages (not enough satellites in view to get an accurate locational fix).

bear in mind that galalio isnt fully operational just yet (think only one or two satellites in orbit) and glonass (Russian) is really outdated though they are tying to revive it.

it is already possible just using the american system and real time corrections to achive accuracies of about +-3cm.

RE: Super accuracy?
By Smartless on 5/28/2008 4:41:56 PM , Rating: 2
At the very least it should give us more battery life. Probably will help accuracy too but probably more reliability. With my handheld Garmin, I've had trouble getting more than 2 satellites when in the city, when it rains, in a forest, in a valley... But the car ones have been pretty good.

RE: Super accuracy?
By InternetGeek on 5/28/2008 7:14:17 PM , Rating: 2
What model are you using? I have a 60CSx and the only time I loose signal is when inside a tunnel (Sydney's Cross City Tunnel). Otherwise it works flawlessly.

RE: Super accuracy?
By rtrski on 5/28/2008 7:28:12 PM , Rating: 2
Confucius say, "Man with three global navigation satellite systems, never know exactly where he stand."

Seriously though, I do believe that picking up more satellites or doing a much longer integration in place is one of the ways they can improve accuracy in the received positioning. But I'm not sure that applies when the additional sats are from different networks. You need 4 sats to resolve your position (four variables, x, y, z, and delta time, effectively) to begin with...I don't think you could use 3 GPS + 1 GLONASS link, but I could be totally wrong on that count.

Probably your absolute accuracy doesn't improve but your probability of receiving that absolute accuracy does, assuming the orbits are such that you've improved your odds of getting a good signal by picking up from all networks.

RE: Super accuracy?
By MrPoletski on 5/28/2008 10:19:32 PM , Rating: 2
Yes it will. The longer you track the GPS satellites the more accurate a position you can gather other time. Having more data points to work with will only hasten this. The extra data would have to be used intelligently though.

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