In order to provide spatially selective sound capture in a teleconferencing environment, microphone array systems require accurate determination of the location of the desired source. Sound source location in turn relies on estimating time delay of arrival (TDOA) of a sound wave-front across a given microphone sensor pair. The cross-power spectrum phase (CPSP) method M. Omologo and P. Svaizer, ...

This paper presents a newly proposed asynchronous time difference of arrival (A-TDOA) positioning system. Two major challenges for accurate location finding in indoor environments are the fine time resolution and high accuracy time synchronization. This paper proposes a new positioning method that resolves the time synchronization difficulty by measuring the time difference of arrival at a sing...

In this paper the performance of GPS timing under jamming conditions is evaluated in the context of a GPS jammer localization system that uses the TimeDifference-Of-Arrival (TDOA) technique. To investigate the performance of GPS timing receivers under jamming conditions, jammer signals of different types and powers were combined with real GPS signals and input into two timing receivers and the ...

The study site, l’etang de Piantarella, is located in Bonifacio, on the southern coast of Corsica (France). Three cores were extracted: Piantarella 1 (630 cm, WGS84: 41° 22ʹ 29.34″ N, 9° 13ʹ 12.62″...

Time difference of arrival (TDOA) estimation is one of the key techniques in array signal processing and has wide applications in hands-free speech interface. TDOA is used to derive the time difference of signal propagation from source to the spatially separated microphones. The acoustic transfer functions ratio (ATF-s ratio) method is one of the robust approaches to get TDOA estimate in presen...

The Time Difference of Arrival (TDOA) method has been widely used for sound source localization. However, because of the Doppler-effect, the TDOA method cannot be directly used for locating moving sound sources. This paper develops a moving sound source localization method based on TDOA, combining with Doppler-effect elimination and source plane scanning. This method is suitable for locating so...

This article is focused on a problem of the error estimation of the radar signal source localization by the TDOA (Time Difference of Arrival) method. More precisely, it is focused on the finding and solving of an analytical equation (error equation) that describes the source position error without any mathematical simplifications and approximations. The solution of this analysis is the covarian...

The coordinates of a location obtained from a Global Positioning System (GPS) receiver depend on the type of environments. This paper discusses the errors in GPS coordinate conversion from the World Geodetic System 84 (WGS84) to the Universal Transverse Mercator (UTM) system, in different environments and their reduction using Kalman filter. 30 samples of positional coordinates, each for three ...

Dear Editor, This paper is concerned with the underwater localization based on acoustic signals. Specifically, we will focus search of an target that can constantly broadcast a beacon signal, such as black box. Common measurements for are Doppler shift [1], time arrival (ToA) [2]–[4], difference (TDoA) [5], [6], angle (AoA) [7], etc. In this investigate fundamental limits shift-Based, ToA-Based...

This article addresses the underwater acoustical localization problem by using time-difference-of-arrival (TDOA) and bearing-angle-of-arrival (BAOA) measurements. For acoustic equipment, such as ultrashort baseline system (USBL), whose bearing measurements are different from traditional angle-of-arrival (AOA) model, a closed-form solution for hybrid TDOA/BAOA-based source is developed. However,...