Tracking of the noise signal in noise measurements needs special techniques. The difference between object and background noise is defined, using the noise distribution. The proposed technique is based on the model of the background noise. The window based approach is used for input signal preprocessing. The comparison of two distributions empirical and observed is used. The global distribution...

Ground conductivity meters use electromagnetic fields for the mapping of geological variations, like the determination of water amount, depending on ground layers, which is important for the state analysis of embankments. The VLF band is contaminated by numerous natural and artificial electromagnetic interference signals. Prior to the determination of ground conductivity, the meter's working fr...

In this paper, a novel track-before-detect algorithm is proposed for weak target with low signal to noise ratio. Multi-sensor information combining with trackbefore-detect technology is used to improve the signal to noise ratio. According to frame sequences of each sensor, Rao-Blackwellized particle filter, which is a clever combination of the Kalman filter and the standard particle filter, is ...

In this paper, we presented a track-before-detect (TBD) method which can cope with range-Doppler ambiguity for medium pulse repetition frequency (MPRF) radars. The target state evolutions in the ambiguous range-Doppler domain are considered as a hybrid system with the range-Doppler ambiguous number deemed as mode variable. Phase information of measurement is used to provide a detection sensitiv...

The conventional tracking paradigm is to sequentially apply a single frame detector to each sensor frame and then employ a tracking algorithm to determine which detector outputs originate from targets and which are false alarms. The tracker associates detections from a particular target and estimates parameters of interest for the target [3], [1]. The obvious shortcoming of this approach is tha...

Detecting moving targets using Synthetic Aperture Radar (SAR) imagery is challenging since target images become highly distorted due to the unknown motion of the target. The distortions include smearing, and displacement, of the target signal across the SAR image. This paper reports an approach to moving target detection which avoids these distortions by operating on the target’s shadow. Unlike...

This paper presents a novel compressed sensing based track before detect (CS-TBD) algorithm. The proposed algorithm reconstructs the whole radar scenario (direction of arrival (DOA)Doppler plane) for each range gate at consecutive scans using an improved stagewise orthogonal matching pursuit (StOMP) algorithm, resulting in a three-dimensional range-DOA-Doppler space. It then performs temporal t...

The IEEE 802.11e Enhanced Distributed Channel Access (EDCA) protocol has been proposed for provisioning of differentiated Quality-of-Service (QoS) between various Access Categories (ACs), i.e., inter-AC QoS, in Wireless Local Area Networks (WLANs). However, the EDCA lacks the support of the intra-AC QoS provisioning, which is indispensable in the practical WLANs since the network loads are alwa...