This report presents R2DM (Raw Ranging Data Management) and PDM (Processed Data Management) services. R2DM service is a web service developed for storing, managing and accessing the raw data from indoor localization benchmarking experiments. By raw ranging data we mean the measured physical values used as input for the localization algorithms, such as Angle of Arrival (AoA), Time of Arrival (To...

Ammonia oxidation is an important process for decreasing ammonia concentrations in wastewater-impacted rivers. Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are re sponsible for ammonia oxidation, which is the first step of the nitrification process. Nitrification and urea hydrolysis were monitored in sediment and water column samples in the Grand River (Ontario), and nitrification inhibit...

For successful opportunistic spectrum access (OSA) using spatial information, accurate localization is a crucial first step. In this paper, we consider a group of unlicensed (secondary) nodes that collaboratively localize a target licensed (primary) transmitter. We propose an optimal hybrid localization scheme based on signal strength (SS) and angle-of-arrival (AOA) measurements. Such a localiz...

The impetus for this paper and the underlying research is to investigate and develop robust beamforming algorithms with synthetic antenna arrays for GNSS signals. The concepts of synthetic array based beamforming and Angle-Of-Arrival (AOA) estimation for Global Navigation Systems (GNSS) signals are described in this paper. The core idea is the utilization of GNSS antenna motion to synthesize a ...

We present the convolution neural networks (CNNs) to achieve localization of near-field sources via symmetric double-nested array (SDNA). Considering that incoherent can be separated in frequency spectrum, we first calculate phase difference matrices and consider typical elements as inputs networks. In order guarantee precision angle-of-arrival (AOA) estimation, implement autoencoders divide AO...

A battery-less 5.8-GHz transmitter (TX), compact and lightweight enough to enable flight of ~90 mg honeybees free roaming bumblebees within their nest, was developed. The TX coupled a phased-array antenna receiver achieve angle arrival (AOA) estimation bee localization through received signal strength indicator approach (RSSI). integrated into commercial unmanned aerial vehicle (UAV) support au...

An adaptive microwave photonic angle-of-arrival (AOA) estimation approach based on a convolutional neural network with bidirectional gated recurrent unit (BiGRU-CNN) is proposed and demonstrated. Compared the previously reported AOA methods phase-to-power mapping, method unnecessary to know frequency of signal under test (SUT) in advance. The envelope voltage correlation matrix obtained from du...

This paper presents two novel methods for Angle-of-Arrival (AoA) estimation in the presence of unknown mutual coupling. We mainly focus on the first method, where we show that this method could estimate AoAs of multiple sources when more mutual coupling parameters are included in the model, compared to existing methods. Furthermore, we derive a closed form Mean-Squared-Error (MSE) expression of...

The uplink inter-cell interference is a major impairment in wireless systems. In this paper, we provide a geometrical-based framework for its analysis in networks with convex polygonal coverage area. Algebraic expressions for the Angle-of-Arrival (AoA) statistics of the uplink interfering signals are obtained. Simulation results validate the model. Representative examples show the dependence of...

This paper exploits the Angle of Arrival (AoA) information for improving Bit Error Rate (BER) performance of fixed wireless communications, which is more predominant in wireless sensor networks. In the proposed approach, the steering vector corresponding to the AoA is used as the signature vector and the signals arriving at other directions are considered as interference for single user environ...