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Communication Dans Un Congrès Année : 2018

Cross-channel souding for HF geolocation: concepts and experimental results

Résumé

In the context of passive geolocation of High Frequency (HF) transmitters using the Time Difference of Arrival (TDoA) method, the transmitted signal and the propagation channel is unknown. This paper explains the principle of a method termed as "cross-channel sounding" along with its concepts. This method is used to evaluate the propagation duration differences of an unknown signal received by multiple synchronized distributed receivers. The mathematical description for cross-channel sounding is detailed, emphasizing the importance of the nature of the transmitted signal in the estimation of the propagation duration differences. An operational country wide TDoA receiver network capable of capturing HF signals is presented. HF broadcast signals are captured from different transmitters around Europe. Experimental data are used to analyze the different propagation modes from cross-channel sounding and assess the TDoA estimation complexity in the case of multipath channels.
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Dates et versions

hal-01857311 , version 1 (14-11-2018)

Identifiants

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Ankit Jain, Pascal Pagani, Rolland Fleury, Michel Ney, Patrice Pajusco. Cross-channel souding for HF geolocation: concepts and experimental results. EuCAP2018 : 12th European Conference on Antennas and Propagation, Apr 2018, Londres, United Kingdom. ⟨10.1049/cp.2018.0949⟩. ⟨hal-01857311⟩
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