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Re: ppp averaging and circular error of probability


From: Hans Mayer
Subject: Re: ppp averaging and circular error of probability
Date: Wed, 14 Sep 2022 20:09:58 +0200
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.13.0



Yo Gary et al,

this task terminated after 3 days and I run the remaining jobs gpsdecode, gpsprof, gnuplot and display as described in the man page.

But the issue is not reproducible. In a sense of statistics I got reasonable results this time.

CEP50% = 0.612m , CEP95% = 1.612m , CEP99% = 2.050m

But I see there another issue. In the last line of used satellites I have only zeros.

With the other method connecting gpsproof directly to gpsd I have for example this last line

Used 50.5  39  59  3.8 sats  ( for mean, min, max and sigma )

The problem with 0 satellites can also be reproduced with a one minute sampling rate.


Kind regards

Hans



On 11.09.22 19:57, Hans Mayer via wrote:

Yo, Gary,

many thanks for your information.


On 10.09.22 22:21, Gary E. Miller wrote:

Easy to grab:  gpspipe -R > raw.log


I started the raw-log and I let you know if finished and if the issue is reproducible.


Kind regards

Hans






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