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| GPS Performance v8 - Chipset Comparison : SiRFatlasIV Impresses |
Posté le 18 septembre 2009 à 15:14:00 par gpspassion. EN - Hardware
Source : Gpspassion
Updated September 18th, 2009
When the SiRFstarIII chipset was released in early 2005 it represented a major breakthrough for GPS as a mainstream consumer product thanks to its high sensitivity engine that made GPS easier to use. Since that time, GPS performance had remained largely "stagnant", with other chipset makers releasing their own high sensitivity chipsets. We got a sense that this was about to change when SiRF announced the SiRFstarIV chipset in July and it was tempting to check whether the recnt SiRFAtlasIV platform could give a preview of things to come...
As usual you can't beat side by side testing, so I corralled no less than six GPS systems, three dataloggers : AMOD 3080/SS3, Qstarz Q1000P/MTKv1, Qstarz Q1000X/MTKv2 and three AIOs/PNDs : Garmin nuvi 1490/STMicro Cartesio, Navigon 8110/SS3 and Takara GP53 with SiRFAtlasIV and drove out in a busy urban area. While the first five performed similarly, the SiRFstarIV based system stood out, both with its smooth and accurate tracks and with its unusual GPS signal data. The raw tracks, signal analysis and results are shown in the September 2009 - GPS Chipsets : SiRFAtlas IV Impresses article, the 8th in the "Performance Comparison Series".
Updated February 14th, 2008 - Over the past year GPS modules have been added to many new PDAPhones and Smartphones and the models announced by Sony or Nokia at the MWC show in Barcelona this week take that trend further. While SiRF had little competition up until last year with their powerful SiRFstarIII chipset, TI were chosen by Nokia and HTC used the GPS module included with the Qualcomm GSM/Wifi MSM chips. This was likely driven by cost and convenience, but what about performance in the field as this what really matters at the end of the day for the user experience...
 ...To get a handle on this, we compared four GPS PDAPhones with different chipsets, the Eten X600/SiRFstarIII, the Samsung i780/Qualcomm 62xx, the HTC TyTn II/Qualcomm 72xx and the Nokia N95/TI. The raw tracks, signal analysis and results are shown in this article, the 7th in the "Performance Comparison Series", with good overall performance on average but the edge remains with the SiRFstarIII based Eten.
Updated March 26th, 2007 - Integration is the key word these days and most new mobile platforms are PDAPhones with many of them including a GPS module. GpsPasSion regulars know that GPS performance varies a lot from one chipset to the other and even with the same chipset, depending on the design of the device (type of antenna used, interference, etc...), so here is a new...
 ... "side by side" comparison of four GPS PDAPhones, the Mio A701, the HTC P3300/SPV M650, the Asus P535 and the HTC P3600/SPV M700 to sort through their GPS behavior in terms of accuracy, sensitivity and speed of acquisition.
Updated November 13th, 2006 - Picking up where we left things in May and as you know a lot of testing has occurred since, but it has been sprinkled in articles throughout the site, so here's a more formatted comparison between three Bluetooth GPS receivers sporting three different chipsets, the popular Globalsat BT-338 with a SiRFstarIII chipset, the iTrek M5 with a NemeriX chipset and the iBlue 737 with the brand new MTK chipset that we've covered in detail here. Paul drove into Manhattan with these three units on his dashboard...
 ... and logged the raw data. You can click here to see what can me made of these recordings
Updated June 12th - After an interruption in April for some in depth "coated windshield" GPS testing (WIP), let's resume these comparisons with a family of GPS systems over time, the TOMTOM GO500, ONE (not released in the USA but same design as the RIDER) and 910. As a reminder, the GO500 uses the SiRFXtracv2 chipset, the ONE uses the SiRFstarIII and the GO910 uses the SiRFstarIII v2 or "second generation", to use the term coined by Navman for its new 530/720/750 AIOs...
 ... Click here for the full article.
Updated 04/03 - Version 2 of the multi-platform GPS performance comparison is now available, with no less than 11 GPS systems being tested side-by-side, ranging from the Garmin Forerunner 205 watch to the Hi-Res SupportPLUS AIO or the GNS 5843 Bluetooth and TMC receiver. Here is the list : Becker Traffic Assist (AIO- XT2) - Eten G500 (PDAPhone) - Garmin 60Cx (Standalone) - Garmin Edge 305 (Biking) - Garmin Forerunner 205 (Watch) - Globalsat BT-338 (Bluetooth) - HP hw6515 (PDAPhone - GLv202) - GNS 5843 (Bluetooth+TMC) - Holux GR271 (CF) - Medion PNA500T (AIO) - SupportPLUS (AIO)....
Posted 02/23 - We have been comparing GPS receivers since the site was launched in late 2002, although at the time models available for testing where few and far in-between and......our testing methods were naturally a bit "inexperienced". These days, new GPS systems and chipsets seem to be "popping out" each day, in PDAs, in phones, AIO's, etc...and our test methods took a turn for the better in 2005 with the reference GPS Chipset Comparison Article that focused on comparing actual tracks.
While guides will compare similar systems, we will have regular "cross-platform" comparisons to see what type of performance each platform has to offer. Starting off the series : Asus A636 (SiRFstarIII) - Globalsat BT-338 (SiRFStarIII) - HP hw6515 (Globallocate GL20000) - Qtek G100/HTC Galaxy/i-Mate PDA-N/Pharos 525 (SiRFstarIII) - Sony NV-U50 (Sony v3) with some unexpected results that show that the power of the SiRFstarIII chipset has its limitations too and that the upcoming HP hw 6515 v1.29 GPS software upgrade should make a big difference for the users, click here for the full article.
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Lu : 8534 | Suite de l'article... ( mots)
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