Impact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays

Details Impact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays Impact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3323303t&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 23, CiteID L23303

Physics

23

Atmospheric Composition And Structure: Pressure, Density, And Temperature, Geodesy And Gravity: Non-Tectonic Deformation, Geodesy And Gravity: Atmosphere Monitoring With Geodetic Techniques (6952), Geodesy And Gravity: Satellite Geodesy: Results (6929, 7215, 7230, 7240), Geodesy And Gravity: Satellite Geodesy: Technical Issues (6994, 7969)

Scientific paper

Corrections to zenith atmospheric delays (including hydrostatic components) are estimated in geodetic analyses using partial derivatives that relate wet delays to the phase observations. At low-elevation angles, partial derivatives of the hydrostatic and wet delays are sufficiently different as to cause errors in the estimates of station heights and zenith total delays unless accurate surface pressure values are used to model the hydrostatic delay. The associated errors are latitude dependent because sites at high latitudes have a higher percentage of low-elevation observations. A priori zenith hydrostatic delay errors project into GPS height estimates with typical sensitivities of up to -0.2 mm/hPa, depending on the elevation angle cutoff and elevation angle dependent data weighting used in the analysis. This generates height errors of up to 10 mm and seasonal variations of up to 2 mm amplitude. The errors in zenith delay estimates are about half the magnitude of the height errors.

Affiliated with

Also associated with

No associations

Rating

Impact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Impact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact of a priori zenith hydrostatic delay errors on GPS estimates of station heights and zenith total delays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1544679