sonar
See Also: lidar, radar
[remote sensing] Acronym for sound navigation and ranging.
SONAR
A system using transmitted and reflected underwater sound waves to detect and locate submerged objects or measure the distance to the floor of a body of water. This technology is used in Garmin fishfinders and sounder products.
sonar
Acronym for sound navigation and ranging. A system or device that measures the time lapse between emitting a sound and receiving a returned echo to determine the location, depth and shape of objects under water.
Passive; Sonar is used for detecting, ranging and measurements of underwater objects and terrain.
Seismograms taken at different locations can locate and measure earthquakes (after they occur) by comparing the relative intensity and precise timing.
Side Scan SONAR; Simple "Sight" Survey (Carlson Software)
SSSA
Soil Science Society of America ...
(1993) Side-scan sonar image processing using thin plate splines and control point matching. Numerical Algorithms 5: 85-98.
Barrodale, I., Skea, D., Berkley, M., Kuwahara, R., and Poeckert, R. (1993) Warping digital images using thin plate splines.
Hydrographic surveying by multibeam sonar
(Source: Finnish Maritime Administration)
In addition, a certain amount of shoreline is included or shown on most hydrographic surveys to clearly show the separation of water and land.
r.in.xyz is designed for processing massive point cloud datasets, for example raw LIDAR or sidescan sonar swath data.
Available statistics for populating the raster are:
n ...
Most common mediums include satellite imaging, Global Positioning Systems, RADAR, SONAR, aerial photography, etc. Before the advent of photography, remote sensing was accomplished in such ways as information collection from air balloons.
remote sensing : Any of the technical disciplines for observing and measuring the Earth from a distance, including satellite imaging, Global Positioning Systems, RADAR, SONAR, aerial photography, etc.
Alternative PNT&D solutions using eLoran, INS, and 3D sonar are a necessary component of our ability to always be prepared. One goal for 2009 is to help ensure the U.S.
A "viewshed" is a region visible to an observer. "Visibility" refers to line of sight, but the same concept and calculations apply to transmission of signals in other media: radio and microwave frequency waves, sonar, and radar.
also be used for acquiring information about the surrounding environment in properties such as spatial characterics and presence of other animals or objects. For example, bats use one sort of echo-location for flying. Ships and submarines use sonar.
Major advancements were made during World War II with the development of RADAR (Radio Amplified Detection and Ranging) and SONAR (SOund NAvigation and Ranging).
Signal and Image Analysis: Images -- Illustrated and Described: Time frequency analysis of sonar signals; texture analysis by co-occurrence matrices; image segmentation using 2 D Wigner-Ville distribution; analysis and coding of medical images.
Sonartech Atlas Pty Ltd (Australia)
Software Factory International (Troy, NY, USA)
Southwest Texas State Univ. (Texas, USA)
Spatial Information Services Pty Ltd. (Australia)
SPOT Image Corp. (VA, USA)
State of Hawaii, Dept. of Trans.(USA) ...
 See also: Location, Information, Area, Analysis, Model
  
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