Airborne GPS Kinematic Positioning and its Application to Oceanographic Mapping
نویسنده
چکیده
Precise, long-range, airborne GPS kinematic positioning requires the use of carrier phase measurements, the data processing of which suffers from the technical challenges of "on-the-fly" ambiguity resolution and cycle slip repair. In this paper the authors describe how the combination of an 'ambiguity recovery' technique and a 'linear bias correction' method has been used to support oceanographic mapping in Australian waters. Two experiments, carried on the 4th December 1997 in the Torres Strait between Papua New Guinea and Australia, and on the 20th May 1998 at Lake Argyle in Australia, were analysed. The results indicate that the topography of the water surface can be obtained with sub-decimetre accuracy, with a spatial resolution of a few metres. The main errors are attributable to multipath interferemce of the GPS signals at the antennas from the aircraft surface.
منابع مشابه
Mitigating Tropospheric Propagation Delay Errors in Precise Airborne GPS Navigation
The high spatial and temporal variability of the troposphere is well known, as is its effect − through propagation delays − on GPS positioning. This effect can be particularly problematical in airborne kinematic differential positioning where the altitude difference between reference station and aircraft is typically quite large. The use of zenith delay models and mapping functions at ground st...
متن کاملHigh Precision Kinematic Positioning Using Single Dual-frequency Gps Receiver
Currently, high precision kinematic GPS positioning with centimetre level accuracy can only be carried out using differential GPS (DGPS) positioning techniques which require the deployment of base receiver stations. The requirement to deploy base receiver stations, however, spatially limits the operating range of the rover receiver to about 20 km from the base stations. As a result, it not only...
متن کاملGPS Campaigns for Validation of InSAR Derived DEMs
Interferometric Synthetic Aperture Radar (InSAR) is a rapidly evolving technique. Spectacular results that are obtained in various fields, such as the monitoring of earthquakes, volcanoes, land subsidence and glacier dynamics, as well as in the construction of Digital Elevation Models (DEMs) of the Earth's surface and the classification of different land types, have demonstrated its strength. A...
متن کاملAccurate Mobile Urban Mapping via Digital Map-Based SLAM †
This paper presents accurate urban map generation using digital map-based Simultaneous Localization and Mapping (SLAM). Throughout this work, our main objective is generating a 3D and lane map aiming for sub-meter accuracy. In conventional mapping approaches, achieving extremely high accuracy was performed by either (i) exploiting costly airborne sensors or (ii) surveying with a static mapping ...
متن کاملMedium to Long Range Kinematic GPS Positioning with Position-Velocity-Acceleration Model Using Multiple Reference Stations
In order to obtain precise kinematic global positioning systems (GPS) in medium to large scale networks, the atmospheric effects from tropospheric and ionospheric delays need to be properly modeled and estimated. It is also preferable to use multiple reference stations to improve the reliability of the solutions. In this study, GPS kinematic positioning algorithms are developed for the medium t...
متن کامل