143 research outputs found
Array of sensors: A spatiotemporal-state-space model for target trajectory tracking
In this paper, with the objective of tracking the trajectory of multiple mobile targets, a novel spatiotemporal-state-space model is introduced for an array of sensors distributed in space. Under the wideband assumption, the proposed model incorporates the array geometry in conjunction with crucial target parameters namely (i) ranges, (ii) directions, (iii) velocities and (iv) associated Doppler effects. Computer simulation studies show some representative examples where the proposed model is utilised to track the locations of sources in space with a very high accuracy
The impact of sensor positioning on the array manifold
Published versio
Target Tracking with a Flexible UAV Cluster Array
Unmanned aerial vehicle (UAV) cluster applications, for tasks such as target localisation and tracking, are required to collect and utilise the data received on “flexible” sensor arrays, where the sensors, i.e. UAVs in this scenario, have time-variant positions. In this paper, using a parametric channel model, a UAV cluster mobility model and a kinematic model of the targets, an extended Kalman based state space model is proposed that tracks the unknown UAV positions and target parameters snapshot by snapshot. Simulation studies illustrating the tracking capabilities of the proposed technique have been presented
Super-resolution broad null beamforming for cochannel interference cancellation in mobile radio networks
Published versio
A polynomial rooting approach to super-resolution array design
Published versio
Blind reception of multicarrier DS-CDMA using antenna arrays
Published versio
Crossed-dipole arrays for asynchronous DS-CDMA systems
Published versio
Preprocessing algorithm for source localisation in a multipath environment
Several methods have been developed which allow the estimation of the location of an existing source with considerable accuracy in the absence of multipaths. However, if, in addition to the Line-of-Sight (LOS) path, non-LOS (NLOS) paths are also present, then all existing localisation algorithms dramatically fail to estimate the location of the source. In this paper, a passive array processing algorithm is proposed, which, if used prior to a localisation approach, suppresses all the multipath contributions in the received signal except for that of the LOS path. The performance of the proposed algorithm is evaluated through computer simulation studies
Modeling and estimation of ambiguities in linear arrays
Published versio
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