Global Navigation Satellite Systems (GNSSs) remain the principal mean of positioning in many applications and systems, but several types environment, performance standalone receivers is degraded. Although works show benefits integration between GNSS Inertial (INSs), tightly-coupled architectures are mainly implemented professional devices based on high-grade Measurement Units (IMUs). This paper investigates improvements enabled by tight integration, using low-cost sensors a mass-market...

Precision Agriculture (PA) refers to applications asking for reliable and highly available precise positions, at centimeter level, in most of operational scenarios. Machinery guidance, automatic steering controlled traffic farming enable machinery move along repeatable tracks on the field, minimizing pass-to-pass errors overlaps. In recent years, satellite-based navigation has also opened door (semi) autonomous machineries some specific scenarios operations. Farming industry is now looking...

Many infrastructures that shape our lifestyle depend on the GPS. Even though not used for positioning, these need GPS to derive a precise time synchronization necessary their operations. Examples are power distribution grids, gateways financial transactions, and telecommunication networks. However, receivers, more in general global navigation satellite system (GNSS) vulnerable interference. This makes GNSS-dependent prone errors. paper addresses vulnerability of GNSS receivers intentional...

Global Navigation Satellite Systems (GNSS) broadcast signals for positioning and navigation, which can be also employed remote sensing applications. Indeed, the satellites of any GNSS seen as synchronized sources electromagnetic radiation, specific processing reflected back from ground used to estimate geophysical properties Earth's surface. Several experiments have successfully demonstrated GNSS-reflectometry (GNSS-R), whereas new applications are continuously emerging presently under...

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....

Signals from global navigation satellite systems (GNSS) can be utilized as signals of opportunity in remote sensing applications. Geophysical properties the earth surface detected and monitored by processing back-scattered GNSS ground. In literature, several airborne GNSS-based passive radar experiments have been successfully demonstrated. With advancements small unmanned aerial vehicles (UAVs) their applications for environmental monitoring, we want to investigate whether provide valuable...

This paper presents the results of a demonstration based on use Navigation Message Authentication (NMA) technique, which represents an effective countermeasure against counterfeit Global Satellite System (GNSS) signals and is one possibilities considered for adoption by Galileo. An intermediate spoofing attack has been simulated in vehicular case study, considering both commercial GPS receiver modified software receiver. The obtained demonstrate potential vulnerability current receivers...

The greater part of modern low-cost GNSS receivers are able to guarantee a fair positioning performance almost everywhere: difficult environments as indoor and urban canyons also considered. aim this work is investigate the effective potentialities kind receivers, in particular static kinematic using post-processing techniques. high number GPS permanent stations continuous increase multi-constellation stations, will give good opportunity improve accuracy precision levels. Several mass-market...

Signals transmitted by Global Navigation Satellite Systems can be exploited as signals of opportunity for remote sensing applications. Satellites seen spread sources electromagnetic radiation, whose reflected back from ground processed to detect and monitor geophysical properties the Earths surface. In past years, several experiments GNSS-based passive radars have been demonstrated successfully, mainly piloted aircraft. Then, proliferation small UAVs enabled new applications where provide...

The paper deals with the development of a Robust Position Unit (RPU) based on real-time implementation an advanced positioning algorithm. RPU uses tightly-coupled technique between mass market single frequency GNSS chipset low cost Inertial Measurement (IMU) Micro Electro-Mechanical Systems and odometer. tight integration algorithm has been obtained through design complex Extended Kalman Filter (EKF). Its performance verified running designed in different challenging environments: urban...

The present paper discusses the advantages of use Doppler shift measurements in a Kalman filter estimator order to improve kinematic stand-alone global positioning system performance. Tests conducted an urban environment using single-frequency receiver demonstrate real proposed real-time computation technique.

Nowadays, Unmanned Aerial Vehicles (UAVs) platform are widely employed in a broad range of applications: from environmental monitoring and precise agriculture to humanitarian localization rescue prevention events such as floods, fires, landslides. On the other hand, Global Navigation Satellite System Reflectometry (GNSS-R) is an emerging technique which allows monitor Earths surface parameters. Recently, this has been applied soil moisture monitoring. In paper, prototype GNSS-based passive...

This paper has the goal to present advancements in design, development and test of a hybrid NAV/COM platform tailored emergency operations. In particular, system here discussed, named NICE - navigation case emergency, been defined with support alpine rescue team members Piemonte Region (Italy) that contributed towards requirements definition as well operational tests. It is important highlight technology created management rescuers field (the mountain environment). network-based positioning...

Power grids depend more and on satellite-derived time use signals from Global Navigation Satellite Systems (GNSSs) to be efficient. GNSS serve reference measurements an absolute scale, allowing for a better accuracy of the power grid state estimate. Phase Measurement Units (PMUs) take synchronous snapshots current voltage amplitudes/phases across grid, returning complete picture system at any instant. Unfortunately, using conventional receiving hardware, transmitted by satellites are well...

Even though state-of-the-art RTK-based GNSS receivers usually match the demanding requirements posed by precise agriculture (PA) applications in open sky conditions, propagation effects degrade performance under foliage or presence of surrounding obstacles. This paper introduces a hybrid GNSS/INS system able to overcome some current limitations constrained environments. Authors performed several tests different agricultural scenarios, such as vineyards, orchards and greenhouses. The presents...

The present paper describes an innovative system providing augmentation services following the cloud computing paradigm. Thanks to its flexibility it enables a large number of users access enhanced WADGPS functionalities in navigation domain. Such platform, called module, relying on EGNOS and EDAS, has been originally conceived make available integrity existent systems through easy integration that avoid complete redesign existing services. for remote Protection Levels computation...

The paper presents the SafePort project. aim of project is realization a system close to market able provide safe and efficient control transit all vessels in port from entrance their berths out again using European Geostationary Navigation Overlay Service (EGNOS) Safety Life (SoL) information. After description basic concepts wants leverage on, an overview modules provided. focused on implementation tests Portable Pilot Unit called SafePilot which exploits EGNOS SoL feature order whole...