Search results for "GPS"

Analisi di rilievi NRTK condotti con differenti reti di stazioni permanenti in Sicilia

2010

In questo studio, tuttora in corso di approfondimento e di investigazione, viene svolta un’analisi comparata sulle correzioni differenziali ottenute da reti di stazioni permanenti differenti, ma operanti sullo stesso territorio, quello siciliano. Infatti dopo la rapida diffusione delle tecnologie informatiche, in Sicilia negli ultimi anni, si è assistito ad una proliferazione di stazioni permanenti GPS, da parte di enti pubblici e società private. In particolare nel territorio regionale siciliano sono presenti ben cinque reti di stazioni con differenti ubicazioni, strumentazioni utilizzate, software di gestione e sistemi di riferimento geodetico; oltre quella gestita e coordinata dalla Faco…

Analisi statistica delle serie temporali di dati provenienti dalla rete di stazioni permanenti dell’UNIPA

2010

In questo lavoro ci si è proposti di verificare la qualità dei dati provenienti dalle stazioni permanenti appartenenti alla rete dell’Università di Palermo, creata nell’ambito del progetto PRIN2005 dal titolo: “Reti di stazioni permanenti GPS per il rilievo in tempo reale in impieghi di controllo e emergenza” e gestita dal Dipartimento di Rappresentazione. Attualmente sono disponibili serie temporali di soluzioni giornaliere. Queste permettono di individuare fenomeni ed eventi di varia natura come quella geofisica, geologica, metereologica e, proprio in virtù della numerosità di questi dati si possono rilevare fenomeni di rumore più o meno complessi che possono essere apparentemente di natu…

Effects of Positioning Aids on Understanding the Relationship Between a Mobile Map and the Environment

2013

Positioning technologies such as GPS enable mobile map applications to display a symbol representing an estimation of a user’s location on a mobile map, therefore acting as a positioning aid. Previous research on the cognitive processes involved in map reading suggests that map readers need at least two map–environment points (objects that are visualized on the map and perceived in the environment) for determining their location on a map. Hence, the positioning aid alone does not provide enough information for self-location. Using a field experiment, we assessed the effect of representing the user’s location on a map on the cognitive processes involved in self-location. The results show tha…

Surrogate Modelling for Oxygen Uptake Prediction Using LSTM Neural Network

2023

Oxygen uptake (V˙O2) is an important metric in any exercise test including walking and running. It can be measured using portable spirometers or metabolic analyzers. Those devices are, however, not suitable for constant use by consumers due to their costs, difficulty of operation and their intervening in the physical integrity of their users. Therefore, it is important to develop approaches for the indirect estimation of V˙O2-based measurements of motion parameters, heart rate data and application-specific measurements from consumer-grade sensors. Typically, these approaches are based on linear regression models or neural networks. This study investigates how motion data contribute to V˙O2 …

Mathematical models and simulation of Costas loops

2013

Virtuālas ģeogrāfiskas sētas uzstādīšana suņa atrašanās vietas ierobežošanai izmantojot Globālās pozicionēšanas sistēmu

2018

Sistēmas mērķis ir spēja reāllaikā ierobežot suņa pārvietošanos noteiktā virtuālā ģeogrāfiskā sētā pēc iespējas saudzīgākā veidā. Tas tiks panākts izmantojot arduino, akselerometru, GPS moduli, GSM/GPRS moduli, skaņas signālu, ultraskaņas signālu un tīmekļa vietni, kurā būtu iespējams uzstādīt šīs koordinātes un redzēt suņa atrašanās vietu. Šajā kvalifikācijas darbā tika izstrādāta daļa no šīs sistēmas, kas ir tās kodols – suņa ierobežošana ar skaņas signālu balstoties uz GPS un akselerometra datiem.

Recovery of mobility function and life-space mobility after ischemic stroke: the MOBITEC-Stroke study protocol

2020

Abstract Background Stroke is a major cause of disability and stroke incidence increases with age. Stroke frequently results in permanent limitations of mobility, and, consequently, the need for the help of others in activities of daily living. In order to optimize rehabilitative efforts and their functional outcomes, detailed knowledge of the functional recovery process, regarding mobility, is needed. Objectives of the MOBITEC-Stroke study are: 1.) To characterize mobility, including lower extremity physical function (LEPF) and life space (the geospatial extent of all of a person’s movements), and changes in mobility within the first year after stroke. 2.) To identify and characterize subg…

Precision Agriculture: Past, Present and Future

2011

From 1978 the Global Positioning System, needed for sensing the position of military targets (e.g. buildings, machinery), was developed as a pure military system, while in 1983 it was made available also for public use. Therefore, at the beginning of 80s precision agriculture, requiring GPS for sensing the position to which any measured field parameter must be geo-referenced, was implemented for the first time in US. In fact, soil and crop parameters are spatially variable in a field, so that spatially uniform rate crop input applications cause increased environmental impact and crop input waste. In order to reduce the environmental impact and optimise the use of crop inputs, precision agri…

Valsts nivelēšanas tīkla analīze Rīgā LatPOS sistēmā

2015

Bakalaura darbā tiek pētīta 1. klases nivelēšanas tīkla punktu augstumu saderība ar GPS uzmērīšanas metodēm iegūtajiem punktu augstumiem, izmantojot LatPOS pastāvīgo bāzes staciju sistēmu. Pētījums tika veikts Rīgas pilsētas teritorijā, apsekojot un veicot mērījumus izlases kārtībā 60 esošajiem nivelēšanas tīkla punktiem. Mērījumi tika veikti ar GPS uzmērīšanas metodēm, izmantojot LV’14 kvaziģeoīda modeli, un ģeometriskās nivelēšanas metodi. Rezultātā tika iegūti tīkla punktu augstumi Latvijas normālo augstumu sistēmā, kas tika salīdzināti ar 1. klases nivelēšanas tīkla punktu augstumiem. Veiktais pētījums ļauj izdarīt secinājumus par LV’14 kvaziģeoīda modeļa savietojamību ar Latvijas normā…