[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Paparazzi-devel] SBAS

From: Martin Mueller
Subject: Re: [Paparazzi-devel] SBAS
Date: Tue, 08 Mar 2011 17:46:50 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110223 Lightning/1.0b2 Thunderbird/3.1.8

Hi Ana,

Is there anyone using sbas in Europe?

Some days ago they turned on "safety of life" operations and left the test mode:

Here in Madrid we have had several bad GPS accuracy days and someone in
the list(sorry I don’t remember who, maybe Christophe) has told me to
use an sbas system. I have been reading about EGNOS and I would like to
try it out. Looking for configuration info in the paparazzi wiki, I have
read the following:

6.UBX->CFG->SBAS: Disable (SBAS appears to cause occasional severe
altitude calculation errors)

I don’t know if the problem persists nowadays.

We have done a few flights recently and it worked ok - which is not a very strong indication. U-blox warned to use it as long as it was not fully operational. Not sure how that is now. There were some issues with the US WAAS system reported by Paparazzi users years ago. Seems that u-blox also has an issue with computing power and SBAS.

Then I don’t know how to change this flag in the GPS, maybe is there an
easy way through ublox? I don’t want to modify the GPS info needed for
paparazzi to work.

start u-blox center
go to View/Messages View

x enabled
  Allow test mode use
x Apply SBAS Correction data
x Apply integrity information
1 Number of search channels

"Send" (bottom left)


"Send" (bottom left)


reply via email to

[Prev in Thread] Current Thread [Next in Thread]