The ionosphere can make the short-wave source localization problem further non-linear, leading to a complicated solution process. This paper proposed coordinated positioning algorithm based on ionospheric virtual height (IVH) model jointly estimate target position and reflection using direction of arrival (DOA) time difference (TDOA) measurements. method is divided into two stages, first stage ...

To obtain the accurate time difference of arrival (TDOA) and frequency (FDOA) for passive localization in an unmanned aerial vehicle (UAV) swarm, UAV swarm network synchronization is necessary. However, most traditional distributed protocols are based on iteration, which hinders efficiency improvement. High communication costs long convergence times often required large-scale networks. This pap...

The theoretical and practical performance limits of a 2D ultra-wideband impulse-radio localization system operating in the far field are studied under the assumption that estimates of location are based on time-difference-of-arrival (TDOA) measurements. Performance is evaluated in the presence of errors in both the TDOA measurements and the sensor locations. The performance of both optimal (max...

A method for the direct outdoor localization of multiple impulse acoustic sources by a distributed microphone array is proposed. This problem great interest gunshot, firecracker and explosion detection in civil environment, as well gun, mortar, small arms, artillery, sniper military battlefield monitoring systems. Such kind complicated technical many aspects. In such scenario, permutation arriv...

In this manuscript, we formulate the problem of source localization based on Time Differences of Arrival (TDOAs) in the TDOA space, i.e., the Euclidean space spanned by TDOAmeasurements. More specifically, we show that source localization can be interpreted as a denoising problem of TDOA measurements. As this denoising problem is difficult to solve in general, our analysis shows that it is poss...

When more than two microphones are used, the traditional time-delay-of-arrival (TDOA) based sound source localization (SSL) approach involves two steps. The first step computes TDOA for each microphone pair, and the second step combines these estimates. This two-step process discards relevant information in the first step, thus degrading the SSL accuracy and robustness. Although less used, one-...

We present the hardware design of a high-fidelity, low-cost infrasonic-capable (6 Hz) passive acoustic monitoring (PAM) prototype instrument. The device allows temporal synchronisation using variety global navigation satellite system (GNSS) constellations. This recordings made by independent spatially-distributed nodes to be synchronised in time for and localisation using, example, difference a...

A hybrid location finding technique based on time difference of arrival (TDOA) with round-trip time (RTT) measurements is proposed for a wideband code division multiple access (WCDMA) network. In this technique, a mobile station measures timing from at least three base stations using user equipment receive–transmit (UE Rx– Tx) time difference and at least three base stations measure timing from...

Abstract A closed‐form solution for localising and synchronising an acoustic sensor node with respect to a Wireless Acoustic Sensor Network (WASN) is presented. The aim allow efficient scaling of WASN by individually calibrating newly joined nodes instead recalibrating the entire array. key contribution that be calibrated does not need include built‐in emitter. proposed method uses signals emit...

In this paper we examine the geometrically constrained optimization approach to localization with hybrid bearing (angle of arrival, AOA) and time difference of arrival (TDOA) sensors. In particular, we formulate a constraint on the measurement errors which is then used along with constraint-based optimization tools in order to estimate the maximum likelihood values of the errors given an approp...