Charles K. Toth

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expertise covers broad areas of 2D/3D signal processing, spatial information systems, high-resolution imaging, surface extraction, modeling, integrating and calibrating of multi-sensor systems, multi-sensor geospatial data acquisition systems, and mobile mapping technology. He is chair of ISPRS WG I/2 on LiDAR and InSAR Systems and serves as the Director(More)
During the last decade of the 20 th Century the concept of Mobile Mapping Systems (MMS) has been established and evolved from rather simple land-based systems to more sophisticated, real-time multi-tasking and multi-sensor systems, operational in land and airborne environments. Mobile Mapping technology has made remarkable progress, notably expanding its(More)
—Reliable and accurate geolocation is essential for airborne and land-based remote sensing applications. The detection, discrimination, and remediation of unexploded ordnance (UXO) and other munitions and explosives of concern (MEC) using the currently available detection and geolocation technologies often yield unsatisfactory results, failing to detect all(More)
This paper focuses on the potential of using airborne laser scanning technology for transportation applications, especially for identifying moving objects on roads. An adaptive thresholding algorithm is used to segment the LiDAR point cloud, which is followed by a selection process to extract the vehicles. The LiDAR data are capable of measuring the(More)
Chairman of the Working Group "Pseudolite applications in Engineering Geodesy", of the International Association of Geodesy's (IAG) Special Commission 4, and a member of the Editorial Board of the journal GPS Solutions. where he has been investigating aspects of satellite navigation and positioning for ten years. In February 2000 he commenced a two year(More)
Mobile terrestrial mapping systems have seen remarkable developments recently. Fueled by an unprecedentedly strong demand for high-resolution and accurate 3D geospatial data, these systems serve the probably fastest growing market segment: city modeling. In particular, the recent introduction of powerful mobile laserscanning systems is of main interest, as(More)
To fully exploit the potential of LIDAR technology and to consequently achieve maximum accuracy of the laser points on the ground, the entire multi-sensory measurement system should be carefully calibrated. The overall system calibration is a very complex task and includes individual sensor calibration as well as the determination of the sensors' spatial(More)
This paper discusses the introduction of pseudolites (ground-based GPS-like signal transmitters) into existing integrated GPS/INS systems in order to provide higher availability, integrity and accuracy in a local area. Even though integrated GPS/INS systems can overcome inherent drawbacks of each component system (line-of-sight requirement for GPS, and INS(More)