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Propulsion System Modelling for Multi-Satellite Missions Performed by Nanosatellites

BIBLIOGRAPHY [1] Guerra, A. G. C., Francisco, F., Villate, J., Aguado Agelet, F., Bertolami, O., and Rajan, K., 2016, “On Small Satellites for Oceanography: A Survey,” Acta Astronaut., 127, pp. 404–423. [2] “Planet” [Online]. Available: https://www.planet.com . [Accessed: 15-Dec-2017]. [3] NASA, 2017, “Cyclone Global Navigation Satellite System (CYGNSS)” [Online]. Available: https://www.nasa.gov/cygnss . [Accessed: 15-Dec-2017]. [4] Brown, O., and Eremenko, P., 2006, “Fractionated Space Architectures: A Vision for Responsive Space,” 4 th

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Implementation of Satellite Techniques in the Air Transport

References Banaszek K., Fellner A., Trómiński P., (2012). The satellite based augmentation system - EGNOS for non-precision approach global navigation satellite system, Probl. Transp. 2012, t. 7 z. 1, pp. 5-19. Ćwiklak, J., Fellner, A., Fellner, R., Jafemik, H., Sledzinski, J. (2014). Selected considerations of implementation of the GNSS, Geophys. Res. Abstr. 2014 vol. 16 EGU2014-9007. Fellner, A. Trómiński P., Sulkowski, J., Grzybowski, A. Zadrąg, P. (2011). Analysis of methods and algorithms for jamming and to

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Application of Sentinel-2 and EnMAP new satellite data to the mapping of alpine vegetation of the Karkonosze Mountains

N., Rogaß C., Gauert C., Altenberger U., de Wit M., 2016, Multi- and hyperspectral spaceborne remote sensing of the Aggeneys base metal sulphide mineral deposit sites in the Lower Orange River region, South Africa . “South African Journal of Geology” Vol. 119, no. 1, pp. 63–76. Nink S., Hill J., Buddenbaum H., Stoffels J., Sachtleber T., Langshausen J., 2015, Assessing the suitability of future multi- and hyperspectral satellite systems for mapping the spatial distribution of Norway spruce timber volume . “Remote Sensing” Vol. 7, pp. 12009

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Proposition of Ionospheric Grid in Navigation Satellite System BeiDou

REFERENCES [1] BeiDou Navigation Satellite System, Signal In Space, Interface Control Document , Open Service Signal (Version 2.0), China Satellite Navigation Office, December 2013, [online], http://www2.unb.ca/gge/Resources/beidou_icd_english_ver2.0.pdf [access 17.06.2016].

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Estimation of Slant Tropospheric Delays from GNSS Observations with Using Precise Point Positioning Method

Abstract

Global Navigation Satellite Systems give opportunities for atmospheric parameters analysis in behalf of solving many atmosphere monitoring tasks. The authors of this article demonstrated possibility of slant tropospheric delays determination with using precise point positioning method – PPP. The atmospheric parameters, retrieved from GNSS observations, including zenith tropospheric delays, horizontal gradients, and slant tropospheric delays, are analyzed and evaluated. It was obtained slant tropospheric delays, along the satellite path, for each satellite, at a certain elevation angle and azimuth, at each time, instead of obtaining a single zenith tropospheric delay composed of all visible satellites at one time. The results obtained proved that suggested method was correct.

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Determination of Space Debris Coordinates by Means of a Space Service Vehicle

Abstract

The problem of space debris utilization is quite relevant nowadays and has a global character. The space industry experts from all over the world are working on the task of removing space debris. This article proposes the method of determining space debris coordinates by means of the airborne equipment of a space service vehicle. The set of airborne equipment includes a global navigation satellite system receiver, an inertial navigation system and a laser radar. To study the accuracy characteristics of the proposed method under different initial conditions a series of simulations was performed. They showed that the accuracy of determining space debris coordinates becomes higher with the reduction of the distance between the debris and space service vehicle. Stringent requirements for the accuracy of determining the orientation of the coordinate frame of the space vehicle are essential for providing the accuracy characteristics of the method.

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New High-Precision Values of the Geodetic Rotation of the Mars Satellites System, Major Planets, Pluto, the Moon and the Sun

Abstract

In this study the relativistic effects (the geodetic precession and the geodetic nutation, which consist of the effect of the geodetic rotation) in the rotation of Mars satellites system for the first time were computed and the improved geodetic rotation of the Solar system bodies were investigated. The most essential terms of the geodetic rotation were computed by the algorithm of Pashkevich (2016), which is applicable to the study of any bodies of the Solar system that have long-time ephemeris. As a result, in the perturbing terms of the physical librations and Euler angles for Mars satellites (Phobos and Deimos) as well as in the perturbing terms of the physical librations for the Moon and Euler angles for major planets, Pluto and the Sun the most significant systematic and periodic terms of the geodetic rotation were calculated. In this research the additional periodic terms of the geodetic rotation for major planets, Pluto and the Moon were calculated.

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Analysis of Systems Ensuring the Acquisition of Real-Time Cartographic Navigation Information

Abstract

Electronic Chart Display and Information Systems (ECDIS), which are used on vessels and can replace paper charts, allow to obtain and display on electronic charts information from basic and additional data sources. For the certified use of ECDIS instead of paper charts, it is necessary to ensure constant updating of Electronic Navigation Chart (ENC) data provided to vessels for use. The known visual and satellite observation systems intended for cartographic information update are costly, have low accuracy and do not allow to quickly update navigational charts in real-time mode. The stand-alone use of remotely piloted aircraft (RPA) will make it possible not only to substantially reduce costs and increase the accuracy of monitoring, but also to provide information in real-time mode.

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The Identification of Possible Applications of the E-Loran System

-48. [8] Czaplewski K., 2018. Does Poland need eLoran?, Transport, Systems, Telematics Conference, Management Perspective for Transport Telematics, Springer Nature Switzerland AG, CCIS 897, pp. 525-544, Basel, Switzerland. [9] Czaplewski K, Goward D., 2016. Global Navigation Satellite Systems – Perspectives on Development and Threats to System Operation . TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 10, No. 2, pp. 183-192. [10] Davies P.C.W., 2005. About Time: Einstein’s Unfinished Revolution . Simon

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Integrated Positioning System With Restricted Access to Navigation Satellite Signals

Abstract

Global satellite navigation system (GNSS) is by far the most cost-effective outdoor positioning technology currently available and used for many types of applications. In some cases a user may face difficult conditions, like restricted access to the navigation satellites due to natural or man-made phenomena. This paper presents an idea of an integrated positioning system capable of functioning under limited visibility conditions of navigation satellites. The system includes a digital antenna array, channels for converting radio navigation signals, a phase difference meter, a gyro platform with 3 gyros, an altimeter and a special calculator. With the help of mathematical modeling, the accuracy characteristics of the system are investigated by determining the coordinates of the carrier under conditions of a small number of available satellite signals.

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