Kinematic positioning is considered as the most important factor in creating a reliable digital terrain model (DTM), by airborne laser scanning. It requires as well, an accurate and consistent base-to-aircraft vector throughout the survey. Different experiments were carried out in Italy and Portugal in collaboration with Auselda ADE group using the TopEye airborne laser scanner. Three main problems encountered in kinematic airborne laser surveys were studied: (1) the radio frequency interference (RFI) with the global positioning system (GPS) signal, (2) the use of more than one reference station when long trajectory surveys are needed and their effects on the GPS results, and finally, (3) the effect of the distance between the reference station and the rover receiver on the GPS solution and consequently on the DTM. Geogenius and TopEye softwares were used for processing the GPS and laser data. Some recommendations were proposed by the authors to be implemented on the helicopter to improve the reception of the GPS signal, and they proposed as well a limitation for the distance between the reference station and the rover receiver.
Quality Assessment of Kinematic Airborne Laser SurveySurveying and Built Environment
BARBARELLA, MAURIZIO
2005
Abstract
Kinematic positioning is considered as the most important factor in creating a reliable digital terrain model (DTM), by airborne laser scanning. It requires as well, an accurate and consistent base-to-aircraft vector throughout the survey. Different experiments were carried out in Italy and Portugal in collaboration with Auselda ADE group using the TopEye airborne laser scanner. Three main problems encountered in kinematic airborne laser surveys were studied: (1) the radio frequency interference (RFI) with the global positioning system (GPS) signal, (2) the use of more than one reference station when long trajectory surveys are needed and their effects on the GPS results, and finally, (3) the effect of the distance between the reference station and the rover receiver on the GPS solution and consequently on the DTM. Geogenius and TopEye softwares were used for processing the GPS and laser data. Some recommendations were proposed by the authors to be implemented on the helicopter to improve the reception of the GPS signal, and they proposed as well a limitation for the distance between the reference station and the rover receiver.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
