GPS surveying with 1 mm precision using corrections for atmospheric slant path delay

Multipath and atmospheric effects can limit GPS surveying precision. We surveyed a 43 km baseline using large diameter choke ring antennas to reduce multipath and pointed radiometer and barometric data to correct for atmospheric slant delay. Based on 11 daily solutions, atmospheric slant delay corrections improved vertical precision to 1.2 mm rms and horizontal precision to sub-mm. Applications for high precision GPS surveying include deformation monitoring associated with earthquake and volcanic processes, subsidence, isostasy, and sea level measurements; monitoring of atmospheric water vapor for climate and global change research, and to improve the resolution of synthetic aperture radar; calibration of satellite altimeters; and precise satellite orbit determination.

[1]  Christian Rocken,et al.  Propagation delays induced in GPS signals by dry air, water vapor, hydrometeors, and other particulates , 1999 .

[2]  Leos Mervart,et al.  Combining consecutive short arcs into long arcs for precise and efficient GPS Orbit Determination , 1996 .

[3]  Christian Rocken,et al.  Sensing integrated water vapor along GPS ray paths , 1997 .

[4]  D. Agnew,et al.  Monument motion and measurements of crustal velocities , 1995 .

[5]  Christian Rocken,et al.  The measurement of atmospheric water vapor: radiometer comparison and spatial variations , 1991, IEEE Trans. Geosci. Remote. Sens..

[6]  Yehuda Bock,et al.  Rapid resolution of crustal motion at short ranges with the global positioning system , 1992 .

[7]  J. Saastamoinen,et al.  Introduction to practical computation of astronomical refraction , 1972 .

[8]  A. Niell.  Global mapping functions for the atmosphere delay at radio wavelengths , 1996 .

[9]  C. Alber,et al.  Pointed water vapor radiometer corrections for accurate global positioning system surveying , 1993 .

[10]  T. Herring.  THE GLOBAL POSITIONING SYSTEM , 1996 .

[11]  Steven Businger,et al.  Sensing atmospheric water vapor with the global positioning system , 1993 .

[12]  C. Alber,et al.  Antenna type, mount, height, mixing, and snow effects in high-accuracy GPS observations , 1997 .

[13]  Timothy H. Dixon,et al.  An introduction to the global positioning system and some geological applications , 1991 .

[14]  市川 隆一,et al.  Positioning Error in GPS Measurements due to Atmospheric Excess Path Delay Estimated from Three-dimensional, Numerical Prediction Model Data. , 1996 .

[15]  Gunnar Elgered,et al.  Ground‐based measurement of gradients in the “wet” radio refractivity of air , 1993 .

[16]  Bradford W. Parkinson,et al.  Global Positioning System , 1995 .

[17]  Christian Rocken,et al.  A Global Positioning System baseline determination including bias fixing and water vapor radiometer corrections , 1986 .