Temat: navigation systems - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Geometry of GPS and GLONASS for different number of operational satellites
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/320847.pdf
Data publikacji:: 2000
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: nawigacja
nawigacja satelitarna
radionawigacja
GPS
navigation
satellite navigation systems
radionavigation system
Opis:: Nowadays there are two world wide satellite navigation systems - American GPS and Russian GLONASS. Distribution (in per cent) and comparison (in per cent) of GDOP (Geometric Dilution Of Precision) coefficient values for different number of operational satellites for the observer at different latitude for different masking elevation angle for both systems are demonstrated in this paper.
Źródło:: Annual of Navigation; 2000, 2; 47-56
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Availability, reliability and continuity model of differential GPS transmission
Autorzy:: Specht, C.
Powiązania:: https://bibliotekanauki.pl/articles/320585.pdf
Data publikacji:: 2003
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: nawigacja satelitarna
satelitarne systemy nawigacyjne
GPS
satellite navigation systems
Opis:: [from "Introduction"] The dissertation is divided into four chapters: Chapter I. "Terminological synthesis of concepts: availability, reliability and continuity in literature on navigation" - covers the study of literature in the field of navigation with regard to the three concepts discussed. They will be characterized with respect to both their nature, and methods of determination navigational purposes. As a result of the analysis, drawn will be conclusions related to the existing differences in perception of the terms, narrowing down of their meaning in navigation, as well as constraints of the models recommended. Chapter II. "General model of the availability, reliability and continuity" - here the definition of navigational structure will be constructed. This definition is indispensable for the process of system modeling. The mathematical model of alternative process with restoration will be worked out, based on the mathematical description of navigational systems’ states. As a result, mathematical relations of availability, reliability and continuity will be formulated, describing them on a general level. The same model will enable the transposition to time-related formulas, typical of a number navigation processes, i.e. processes - where distributions of lifetimes and times of failures are expressed by exponential equations. Chapter III. "Classical differential GPS systems"- the main thesis will be considered here and include structural models of differential DGPS transmission, providing, in this way, for making a separate individual navigational structure - differential GPS transmission. Consequently, models and measures of reliability, availability and continuity will be proposed for transmission of the RTCM messages (type 1 or 9-3) commonly used in navigation. Chapter IV. "Differential GPS system network" - presents the validation method of DGPS systems in the areas where multiple coverage of several radiobeacons and reference stations exists. An analogous method of modelling as in the classic systems is proposed. A general validation of transmission methods for differential GPS will also be proposed in this chapter. The issues considered in this dissertation, will exemplify a group of single element models - GPS telemetric transmission - within the complex structure of differential GPS. We can assume that a new scientific area will be opened for future deliberations in the fields related to: 1. Optimisation of decision making process when deploying maritime reference stations (DGPS) or land based (permanent GPS/RTK), taking into account: user reliability features, minimum requirements for the basin (area), maximization of task effectiveness and many others. 2. Advantages of multistation system nets in the aspect of position accuracy and operation reliability, also other typical features influencing exploitation. The mathematical model proposed in this dissertation, fills the gap concerning methodology used to determine the magnitude of reliability, continuity and transmission availability in differential GPS systems on surveying level. Thus, more effective way of use in navigation has been provided. General and particular theory introduced to describe navigation systems by means of reliability characteristics enables theoretical considerations over individual elements and easy integration into more complex structures.
Źródło:: Annual of Navigation; 2003, 5; 1-84
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Desing and simulative testing of DR/GPS system
Autorzy:: Kaniewski, P.
Konatowski, S.
Powiązania:: https://bibliotekanauki.pl/articles/320843.pdf
Data publikacji:: 2000
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: satelitarne systemy nawigacyjne
nawigacja satelitarna
GPS
satellite navigation systems
Opis:: The article presents a project and simulation results of an integrated positioning system DR/GPS. Firstly, a choice of devices for the positioning system is discussed. Secondly, a concept of integration of a dead reckoning (DR) module with a GPS receiver is described. The system processes data from an odometer, a gyro, an electronic compass, which constitute the DR unit, and from a GPS receiver with use of two complementary Kalman filters. Next, state-space model of the system and Kalman filters are shortly presented. After that, the authors outline an adopted methodology of simulative testing of DR/GPS integrated system. Chosen simulation results are included in the paper. The presented integrated positioning system may find its application as a component of an in-car navigation system or, following several alterations, also as an onboard system of other types of land vehicles.
Źródło:: Annual of Navigation; 2000, 2; 57-68
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Positioning with AHRS/ODOMETER/GPS system
Autorzy:: Kaniewski, P.
Konatowski, S.
Powiązania:: https://bibliotekanauki.pl/articles/320948.pdf
Data publikacji:: 2001
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: nawigacja satelitarna
system pozycjonujący
GPS
nawigacja zliczeniowa
filtracja
satellite navigation systems
positioning system
dead reckoning
filtering
Opis:: The paper presents a project of an integrated positioning system composed of a dead reckoning unit (DR), and a GPS receiver. The DR subsystem includes an Attitude and Heading Reference System (AHRS) and an odometer. The data from DR and GPS are jointly processed via an algorithm of linearized complementary Kalman filter. The paper shortly introduces an idea of relative and absolute navigation. Next, it presents state-space description of the AHRS/ODOMETER/GPS integrated system. a functional structure of the system and Kalman filtering algorithm are presented. At last, the authors outline an adopted methodology of testing of AHRS/ODOMETER/GPS integrated system. Chosen results of the tests, conducted with use of real navigation data, are included in the paper. The presented positioning system may find its application in land vehicles.
Źródło:: Annual of Navigation; 2001, 3; 75-89
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Air-net of Polish permanent stations RTK DGPS in European CNS/ATM system
Autorzy:: Banaszek, K.
Fellner, A.
Śledziński, J.
Trómiński, P.
Zając, J.
Powiązania:: https://bibliotekanauki.pl/articles/224410.pdf
Data publikacji:: 2006
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: systemy nawigacyjne
nawigacja satelitarna
pozycjonowanie satelitarne
DGPS
geodezja satelitarna
navigational systems
satellite navigation
satellite positioning
satellite geodesy
Źródło:: Reports on Geodesy; 2006, z. 1/76; 287-292
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Thermal navigation for blind people
Autorzy:: Marzec, Paweł
Kos, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/2090710.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: blind/visually impaired person
GPS
infrared matrix
infrared sensors
low-energy measurement systems
mobile robots
satellite navigation
thermal navigation
osoba niewidoma
osoba niedowidząca
matryca podczerwieni
czujniki podczerwieni
systemy pomiarowe niskoenergetyczne
roboty mobilne
nawigacja satelitarna
nawigacja termiczna
Opis:: This article presents a system of precise navigation for a visually impaired person which uses GPS navigation and an infrared sensor in the form of an infrared matrix. The presented system allows determining the orientation and distance of a blind person relative to a selected object, e.g. a wall or road edge. The application of the above solution facilitates a significant increase in the accuracy of determining the position of a blind person compared to the accuracy offered by commonly used ground satellite devices. The system uses thermal energy accumulated in the environment without the need to generate additional signals. The main parts of the system are a simple infrared matrix, data processing system and vibrating wristband. Messages and navigation warnings are sent to a blind person in the form of a vibration code. The article describes the method of determining the path of a specified width and distance from the wall of a building, curb, etc., along which a blind person should move. The article additionally describes the method of determining the orientation of a blind person depending on the selected object. Such a method facilitates verifying whether the visually impaired person is moving according to the indicated direction. The method can also be used to navigate mobile robots. Due to the use of natural energy for data registration and processing, the mobile navigation system can be operated for a long time without the need to recharge the battery.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136038, 1--11
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Thermal navigation for blind people
Autorzy:: Marzec, Paweł
Kos, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/2173567.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: blind/visually impaired person
GPS
infrared matrix
infrared sensors
low-energy measurement systems
mobile robots
satellite navigation
thermal navigation
osoba niewidoma
osoba niedowidząca
matryca podczerwieni
czujniki podczerwieni
systemy pomiarowe niskoenergetyczne
roboty mobilne
nawigacja satelitarna
nawigacja termiczna
Opis:: This article presents a system of precise navigation for a visually impaired person which uses GPS navigation and an infrared sensor in the form of an infrared matrix. The presented system allows determining the orientation and distance of a blind person relative to a selected object, e.g. a wall or road edge. The application of the above solution facilitates a significant increase in the accuracy of determining the position of a blind person compared to the accuracy offered by commonly used ground satellite devices. The system uses thermal energy accumulated in the environment without the need to generate additional signals. The main parts of the system are a simple infrared matrix, data processing system and vibrating wristband. Messages and navigation warnings are sent to a blind person in the form of a vibration code. The article describes the method of determining the path of a specified width and distance from the wall of a building, curb, etc., along which a blind person should move. The article additionally describes the method of determining the orientation of a blind person depending on the selected object. Such a method facilitates verifying whether the visually impaired person is moving according to the indicated direction. The method can also be used to navigate mobile robots. Due to the use of natural energy for data registration and processing, the mobile navigation system can be operated for a long time without the need to recharge the battery.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; art. no. e136038
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki