[teqc] Question

[Sam Storm van Leeuwen]

Hi Daniele,

The data looks like single frequency data of a low cost receiver, right?
If this is the case, you can ,with limited accuracy, interpolate the
range data (pseudorange, integrated carrier) using the following steps:
1. calculate the 'stand alone' positions for each epoch. As a by-product
you'll get the receiver clock error with reasonable accuracy.
2. For each epoch: correct epoch time by applying the clock error, and
correct pseudorange and integrated carrier again by applying clock error
(see RINEX 2.10 section 3. DEFINITION OF THE OBSERVABLES)
3. Most probably the epoch time will not be a full second.
Now you can interpolate the ranges to the full second.
and this process is of limited accuracy.

Maybe better than nothing!

Cheers,

Sam


At 20:43 7-3-2006 +0000, you wrote:
>Good afternoon,
>
>I would like to know if it is possible to correct the
>GPS observables (of a RINEX file) of the receiver
>error.
>
>For example:
>  05  5 25  0  0 15.2230000  0  8G16G 3G22G14 ...
>   31687139.09146  24649869.97746  89193652.7594
>    4021695.90246   3073693.39846  89490059.7434
>   20737659.47748  16132538.86747  87108723.2594
>
>The observables are degraded by receiver error that is
>0.223. Is it possible to correct the observables and
>consequently change 15.2230000 to 15.000???
>
>
>Thanks, Daniele Barroca.
>Sao Paulo State, Brazil.
>
>
>
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Sam Storm van Leeuwen                       e-mail: samsvl at nlr.nl
National Aerospace Laboratory NLR       web: http://www.nlr.nl
POBox 90502, 1006BM Amsterdam       phone: +31 20 511 3562
Netherlands                                          fax: +31 20 511 3210