Due to the large amount of different new applications based on GNSS systems, issue interference monitoring is becoming an increasing concern in satellite navigation community. Threats for can be classified as unintentional interference, jamming and spoofing. Among them, spoofing more deceitful because target receiver might not able detect attack consequently generate misleading position solutions. Different kind attacks implemented depending their complexity. The paper analyzes what known...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, the problem of acquiring pilot and data channel next-generation systems (as Galileo, GPS modernization) is addressed analyzed, focusing majority attention to managing higher sign reversal transition rate due navigation message in secondary code channel. It must be considered that case Galileo E1 signals, each period spreading sequence may suffer a change which can reduce...

Proper planning of the installation Battery Energy Storage Systems (BESSs) in distribution networks is needed to maximize overall technical and economic benefits. The limited lifetime relatively high cost BESSs require appropriate decisions on their deployment, order make best investment. This paper proposes a comprehensive method fully support BESS location sizing low-voltage (LV) network, taking into account characteristics local generation demand connected at network nodes, time-variable...

Services based on Global Navigation Satellite Systems (GNSS) are currently in use many critical networked infrastructures and crucial applications. Within the described scenario, importance for GNSS community of investigating effects spoofing attacks, together with anti-spoofing techniques, appears essential. This paper describes results preliminary tests performed lab low cost receivers under attack. Such have been at Istituto Superiore Mario Boella (ISMB) research institute European...

The high level of flexibility achievable with software defined radio (SDR) technology generates interest in the industry mass market receivers, but represents also a valuable tool for research-oriented analysis. This paper exploits this last aspect and demonstrates how it is possible to assess performance different digital estimators C/N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> (i.e., carrier power noise spectral density ratio)...

The objective of the work is evaluation impact new modulation strategies foreseen for galileo signal in space (SIS) on carrier tracking operation within global navigation satellite systems (GNSS) receiver (namely frequency locked loop (FLL)/phase (PLL)) presence multipath. Although multipath has more relevant effects term measurement errors code tracking, its consequences can not be neglected high accuracy applications that rely phase such as, example, real time kinematics (RTK) survey....

A frequency lock loop (FLL) for Global Navigation Satellite System (GNSS) applications is described here. The core element the discrete time Fourier transform (DTFT), that leads to a maximum likelihood (ML) estimation and can be conveniently implemented in software defined radio (SDR) HW platform. algorithm based on iterative evaluation of DTFTs single until incoming locked.

Many scientific activities within the navigation field have been focused on analysis of innovative modulations for both GPS L1C and Galileo E1 OS, after 2004 agreement between United States European Commission development Galileo. The joint effort by scientists parties has multiplexed binary offset carrier (MBOC) which is defined basis its spectrum, in this sense different time waveforms can be selected as possible modulation candidates. goal paper to present detection performance composite...

The problem of designing robust systems to track global navigation satellite system (GNSS) signals in harsh environments has gained high attention. classical closed loop architectures, such as phase locked loops, have been used for many years tracking, but challenging applications their design procedure becomes intricate. This paper proposes and demonstrates the use a quasi-open architecture estimate time varying carrier frequency GNSS signals. Simulation results show that this scheme...

The first step of the digital processing within a Global Navigation Satellite System (GNSS) receiver is signal acquisition. has to detect satellites in view, and for each them, estimate Doppler shift code phase received signal. In order speed up acquisition process, modern receivers use fast technique based on Fourier transform (FFT). This paper presents complexity evaluation FFT-based technique, suitable new GNSS signals both software hardware implementations. After description algorithm,...

Energy Storage is the best candidate to improve renewable energy penetration and moderate intermittent generation problems supporting match between demand production. This paper addresses optimal storage operations scheduling based on load production forecast. Stored controlled minimize input from grid maximizing revenue selling energy. work proposes an solution Ant Colony Optimization (ACO) algorithm enabling battery respond external signals, e.g. price or basis of trades. feature highly...

In this paper we have analyzed the normalization problem in evaluation of DLL discriminator function. We know that parameter setting elements is strictly related to definition If function becomes sensible prompt fluctuations, due a degradation its estimation, also loop characteristics (noise equivalent bandwidth, pole position, etc...) change. order keep as close possible noise-free definition, proposed here method make S-curve more stable.

In the last years, electricity system has been subject to a paradigm change, due increasing share of installed renewable energy sources-based power plants. This fact is leading electrical - which proper operation was however affected by intermittent nature renewables become more "green". The union chain de-carbonization with service reliability opens new opportunities for storage systems, although their relatively high cost highlighted importance optimal decisions in sizing, placing and such...

In this paper we address the problem of acquisition GNSS signals for next-generation Systems (as Galileo, and GPS modernization), which will use with code rate equal to bit rate. case there is a potential sign transition in each segment signal processed schemes. The search space could result greatly impaired, especially methods based on FFT. These are very efficient, but leads modification shape Cross Ambiguity Function evaluated space. Here propose method mitigates impairment, fits...

Detecting and processing Global Navigation Satellite System (GNSS) signals indoors in urban canyons, have gained a great deal of attention due to the problems very weak hostile environments. The detection GNSS is generally based on application statistical test, derived from maximum likelihood theory. work presented here considers new approach using Bayesian technique within scenario where search space size already reduced few tens cells some kind assisted information. are considered as...

The problem of designing the robust architectures for tracking global navigation satellite system (GNSS) signals in harsh environments has gained immense attraction. classical closed loop like phase locked (PLL) have been used many years purposes but challenging applications their design procedure becomes intricate. This paper proposes and demonstrates use a quasi-open architecture to estimate time varying carrier frequency GNSS signal. It is shown via simulation results that such type...