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|Title:||Multi-network Asynchronous TDOA algorithm test in a simulated maritime scenario|
|Authors:||GIOIA CIRO; SERMI FRANCESCO; TARCHI DARIO|
|Citation:||SENSORS vol. 20 no. 7 p. 1842|
|Type:||Articles in periodicals and books|
|Abstract:||In the last few years, the number of applications relying on position of vessels at sea has grown significantly. Usually, these applications exploit information provided by the Automatic Identification System (AIS). Unfortunately, the cooperative nature of AIS makes it vulnerable to different types of attack. Therefore, especially for critical applications, the veracity of the position information reported in the AIS message needs to be verified. Several techniques can be adopted to this end. This paper presents a mathematical extension of the traditional Time Difference Of Arrival (TDOA) localization technique allowing merging TDOA measurement from synchronous and non-synchronous receivers. This technique is tested in a simulated scenario, where the position of a moving target is estimated using different configurations of the receivers network. The robustness of the proposed algorithm with respect to the traditional one is demonstrated. The proposed approach, which is derived from satellite applications, is not limited to the AIS signals nor to the maritime domain, and it can be adopted to estimate the position of any radiofrequency transmitter, by employing a suitable number of non-synchronous receivers.|
|JRC Directorate:||Space, Security and Migration|
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