Re: [Paparazzi-devel] NEO7 gps test

[hendrixgr .]

Well on the same spot that i test all my gps units the best i got was 5.8m accuracy when the second best

gives me ~13m (~5m when airborne).

THE interesting point with the NEO7nand it's active antenna is that hot starts are almost instant compared to all the other gps units i have.

The manual states that 10Hz operation is possible.

Chris

On Mon, Sep 30, 2013 at 3:54 PM, Marius Pfeffer <address@hidden> wrote:

The best ublox offers are ppp modules which can get under 1m precision.

Higher precision will be hard without a RTK system... maybe building a piksi gps will be cheap enough ?

Datasheet says that the update rate can get up to 10 Hz for series 7 modules.

-Marius

Am 30.09.2013 14:46 schrieb "Εd1." <address@hidden>:

Hey, Chris.

Neo 7 seems good, but I want to know a litter bit more.

What's the average accuracy of NEO 7 in your test?

Is it true tha NEO 7 can have update rate up to 10HZ?

I'm just trying to find a way to have a cm level precision outdoor position method, a previous post about RTK-GPS in the kiskstarter looks great but it's a bit expensive.

Regards.

------------------

Edward ZILONG HUANG

address@hidden department, Faculty of Engineering, CUHK

http://appsrv.cse.cuhk.edu.hk/~zlhuang2

 

------------------ Original ------------------

From:  "Chris";<address@hidden>;

Date:  Mon, Sep 30, 2013 03:59 PM

To:  "address@hidden"<address@hidden>;

Subject:  [Paparazzi-devel] NEO7 gps test

Hi.
Just to let all know that i just tested this gps
http://www.ebay.com/itm/281140867506?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
and it works really really good.
It's sensitivity is excellent and it locks in a second where all the
others i have need at least 30 seconds or don't lock at all in the same
spot.
I use the ubx center module because despite it's description IT DOES NOT
HAVE AN EEPROM like the hobbykings still excellent NEO6 GPS, only a
small battery or capacitor and it will loose it's settings after 15-30
minutes
I also don't know how resistant it is with interference from video
transmitters but it does have an active antenna with a SAW filter and it
does not get affected when on top of the stm32f4 cpu of the discovery
board i used for testing.
Maybe someone might know if we can benefit from the 10Hz refresh rate
NEO7 has and if ubx center needs to be updated to set the refresh rate also.


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