Geolocation Techniques | SpringerLinkGeolocation 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.
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.
Geolocation Techniques: Principles and Applications provides a comprehensive overview of geolocation technologies and techniques, from radio-frequency based to inertial based. The focus of this Download book PDF · Download book.
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Principles and Applications
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Springer Professional. Back to the search result list. Table of Contents. Issue archive. Hint Swipe to navigate through the articles of this issue Close hint. Abstract This paper proposes a new geolocation technique to improve the accuracy of the position estimate of a single unknown anonymous radio wave emitter.