In this paper we present a geometric multipath propagation model for a microcell mobile environment. The proposed model provides the statistics for the direction-ofarrival (DOA) of multipath components. These statistics are required to test adaptive array algorithms for cellular applications. The proposed model assumes that 1) a line-of-sight (LOS) path exists between the transmitter and the re...

Multipath channels can highly reduce the performance of global navigation satellite system (GNSS) time-of-arrival (TOA) estimations, as a non-line-of-sight (NLOS) signal distort estimating accuracy for line-of-sight (LOS) in conventional GNSS receiver. This paper firstly investigates dynamic difference LOS and NLOS signals moving antenna. Then, fractional Fourier transform (FRFT) algorithm is p...

Standard scene reconstruction methods attempt to determine the positions which visible elements of the environment occupy in space. Instead of determining where things are, we choose to model where things are not. We model the open space in a scene. This is accomplished by tracking a human participant moving in the environment. Based on the position of the tracked object and where it is visible...

Recently, there has been much interest in accurate determination of mobile user locations in cellular environments. A general approach to this geolocation problem is to gather time-of-arrival measurements from a number of base stations (BSs) and to estimate user locations using the traditional least square approach. However, in non-line-of-sight (NLOS) situations, measurements are significantly...

The differential affine velocity estimator (DAVE) developed in Schuck (2006) for estimating velocities from line-of-sight magnetograms is modified to directly incorporate horizontal magnetic fields to produce a differential affine velocity estimator for vector magnetograms (DAVE4VM). The DAVE4VM’s performance is demonstrated on the synthetic data from the anelastic pseudospectral ANMHD simulati...

in this paper, bam postseismic deformations during 7 years after earthquake have been extracted using persistent scatterer interferometry technique. the time series are inverted for the afterslip distribution on an extension of the coseismic rupture. the estimated postseismic slip value is 20.45±0.38 cm. most of the postseismic displacement field can be explained in terms of fault slip. the res...