The objective of this paper is to introduce and describe the concept of using airborne gravimetry by strapdown INS/DGPS to reference mapping products derived from Interferometric Synthetic Aperture Radar (IFSAR) to the geoid. Calgary-based Intermap Technologies Ltd. is a digital mapping company that focuses on providing digital elevation models and ortho-rectified images using an interferometri...

Terrain aided positioning (TAP) is a kind of positioning method which acquires position information from the terrain elevation datum underneath the vehicle. This method has the characteristics of autonomy, allweather, anti-interference, strong stealthiness and high accuracy. It is widely used in the navigation system for various aircrafts, cruise missiles and underwater vehicles. The fundamenta...

A Real-Time Photogrammetric Mapping System (RTPMS) is being developed at the U. S. Department of Energy's Remote Sensing Laboratory. The RTPMS integrates a 4k by 4k color digital frame camera, a Position and Orientation System, and an Aerial Survey Control Tool (ASCOT) navigation system, with the newly developed One-Path Photogrammetric Program (OPPP). It automatically processes Digital Elevati...

Geographically contours are virtual lines drawn across the terrain to join points that are at same elevation from certain reference point. Contours are essential morphological features that are used along with the associated elevation as basis for generating Terrain Model or Digital Elevation Model for the area of interest. These lines are represented at different scales depending upon the scal...

Through different phases of synthetic aperture radar (SAR) data acquired on dates and/or at satellite imaging locations, the interferometric SAR (InSAR) technique has long been used to map ground deformation or generate global digital elevation model (DEM) (e [...]

Intercomparison of backscatter collected by SAR sensors at heterogeneous radar look angles gives rise to highly variable ground areas being associated with each pixel location within a radar geometry (slant or ground range) image. Many elements within a digital elevation model (in map geometry) can be mapped to a single location in the radar image (range / Doppler coordinates). An image simulat...

A summary of research in urban feature extraction being conducted under a MURI (multi-disciplinary research initiative) program sponsored by the U.S. Army Research Office is provided. Most of the paper focuses on extraction of rectilinear building models. Feature extraction from aerial images is difficult due to problems of segmentation, 3-D inference and shape description. A system for buildin...

− This paper examines the use of different classifiers for integrating multi-temporal remotely sensed data with landform data derived from digital elevation models to produce maps showing areas affected by salinity in the south west agricultural region of Western Australia. Decision trees are used to map saline areas in the Ryan’s Brook catchment, located approximately 50 kilometres southwest o...

Ecological monitoring of Arctic national parks is challenging owing to their size and remote locations. Baseline ecosystem maps are a basic requirement for monitoring and are often derived from classification of remote sensing data. In many cases, however, the vegetation communities of interest overlap spectrally and cannot be separated using imagery alone. One solution is to use ancillary spat...