Geolocation techniques principles and applications pdf
Geolocation Techniques - Principles and Applications | Camillo Gentile | SpringerGeolocation is the identification or estimation of the real-world geographic location of an object, such as a radar source, mobile phone , or Internet -connected computer terminal. In its simplest form, geolocation involves the generation of a set of geographic coordinates and is closely related to the use of positioning systems , but its usefulness is enhanced by the use of these coordinates to determine a meaningful location, such as a street address. The word geolocation also refers to the latitude and longitude coordinates of a particular location. In the field of animal biology and ecology , the word geolocation is also used to refer to the process of inferring the location of a tracked animal based, for instance, on the time history of sunlight brightness  or the water temperature and depth  measured by an instrument attached to the animal. Such instruments are commonly called archival tags including microchip implants , Pop-up satellite archival tags , and data storage tags or dataloggers. TDOA systems often use mapping displays or other geographic information system.
A new DOA-based factor graph geolocation technique for detection of unknown radio wave emitter position using the first-order Taylor series approximation. This paper proposes a new geolocation technique to improve the accuracy of the position estimate of a single unknown anonymous radio wave emitter. We consider a factor graph FG -based geolocation technique, where the input are the samples of direction-of-arrival DOA measurement results sent from the sensors. It is shown that the accuracy of the DOA-based FG geolocation algorithm can be improved by introducing approximated expressions for the mean and variance of the tangent and cotangent functions based on the first-order Taylor series TS at the tangent factor nodes of the FG. The proposed technique does not require high computational complexity because only mean and variance are to be exchanged between the nodes in the FG. Accurate wireless geolocation has received considerable attention in the past two decades  and is expected to play important roles in current and future wireless communications systems. This technology is the key to supporting location-based service applications, e.
Comprehensive coverage of all geolocation techniques, both radio-based and Included format: EPUB, PDF; ebooks can be used on all reading devices.
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