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Topic: high sensitivity gps? (Read 853 times) previous topic - next topic

jwatte

I'm using a BU-353 GPS USB sensor. It gives me 10m error outdoors and 30m error indoors. It also is slow to acquire signal indoors, if it does it at all. But it was cheap :-)

Can anyone recommend a much more precise GPS module? Indoors reception is a plus, but priority 1 is outdoors precision. USB, SPI, I2C, UART are all fine interfaces.

MarkT

If you want high precision you may need to move to differential GPS, standard GPS has about 5m of error (although this can be improved by averaging over time).  BU-353 uses a modern chipset SiRF-III, there are better chipsets apparently, but I wouldn't expect miracles.
[ I won't respond to messages, use the forum please ]

Leon Heller

u-blox makes the best GPS modules. They are used by the military and law-enforcement, because of their performance.
Leon Heller
G1HSM

jwatte


u-blox makes the best GPS modules. They are used by the military and law-enforcement, because of their performance.


Have you actually used these? Do you have links to particular suppliers?

Leon Heller

#4
Apr 30, 2012, 05:11 am Last Edit: Apr 30, 2012, 05:13 am by Leon Heller Reason: 1
I used one a few years ago, it worked very well indoors. They are available direct from u-blox.
Leon Heller
G1HSM

jwatte

Another reference I found (which seems to provide the PPP algorithm that u-blox LEA-6 uses as open source) is this: http://gpspp.sakura.ne.jp/rtklib/rtklib_releasenote.htm

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