| Author |
Message |
 Topic: GPS and wireless based LBS integration |
Leofly
Replies: 3
Views: 7928
|
 Forum: Location Based Services (LBS) Posted: Thu Mar 05, 2009 10:52 am Subject: GPS and wireless based LBS integration |
| MikeB, I see. But the question is actually about TTFF. |
| Topic: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
Leofly
Replies: 7
Views: 3926
|
Forum: Beginners GPS Lounge Posted: Thu Mar 05, 2009 10:49 am Subject: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
http://www.abiresearch.com/Blog/Telematics_Blog/581
Unfortunately, the relentless activity in the GPS-handset, GPS-chipset and navigation software space is not matched by a similar trend in the rol ... |
| Topic: GPS and wireless based LBS integration |
Leofly
Replies: 3
Views: 7928
|
Forum: Location Based Services (LBS) Posted: Tue Feb 24, 2009 8:53 pm Subject: GPS and wireless based LBS integration |
What is typical integration algorithm? Does the system usually wait for GPS fix and takes network based positioning only after GPS fails? (some GPS timeout should be assumed).
Or it starts from the n ... |
| Topic: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
Leofly
Replies: 7
Views: 3926
|
Forum: Beginners GPS Lounge Posted: Tue Feb 24, 2009 9:45 am Subject: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
| Basically, what I’m asking is whether mobile based A-GPS indeed outperforms internet based A-GPS? |
| Topic: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
Leofly
Replies: 7
Views: 3926
|
Forum: Beginners GPS Lounge Posted: Sat Feb 21, 2009 7:20 pm Subject: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
Mike, I believe you are talking about so-called long term ephemeris. They can speed up the first fix, but are useless for satellite search.
On the contrary, cellular assistance can help GPS both in s ... |
| Topic: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
Leofly
Replies: 7
Views: 3926
|
Forum: Beginners GPS Lounge Posted: Sat Feb 21, 2009 5:10 pm Subject: GPS sensitivity: hot start vs. A-GPS (PND vs. mobile) |
| I’m trying to collect some data about A-GPS benefits in real life and my main question now is whether assisted GPS (supported by mobile phones) is really more advanced than a standalone PND with simil ... |
| Topic: Tom Tom ONE version numbers help.... |
Leofly
Replies: 25
Views: 77644
|
Forum: TomTom Portable Navigation Devices Posted: Thu Feb 12, 2009 10:34 am Subject: Tom Tom ONE version numbers help.... |
Am I right, that TomTom does not use SiRF anymore?
I think that some of TT models use Broadcom Chips now.
yes, Broadcom acquired Global Locate two years ago
(btw, CSR did the same with SiRF two ... |
| Topic: Tom Tom ONE version numbers help.... |
Leofly
Replies: 25
Views: 77644
|
Forum: TomTom Portable Navigation Devices Posted: Mon Feb 09, 2009 11:06 am Subject: Tom Tom ONE version numbers help.... |
mikealder, thanks! My unit is definitely one (V8).
Am I right, that TomTom does not use SiRF anymore? |
| Topic: Tom Tom ONE version numbers help.... |
Leofly
Replies: 25
Views: 77644
|
Forum: TomTom Portable Navigation Devices Posted: Sat Feb 07, 2009 7:07 pm Subject: Tom Tom ONE version numbers help.... |
Please help me too
Today I bought tomtom one N14644 etc (Canada 310 on the bottom, exactly as Pocketgps described) and it indeed resembles v4 but it is not equipped with Bluetooth and CD card.
... |
| |
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