Use of integrated GPS and INS systems in aerial photogrammetry

• Autorzy: Poręba M.

Warianty tytułu

PL

Wykorzystanie zintegrowanych systemów GPS i INS w fotogrametrii lotniczej

• Języki publikacji: EN

Abstrakty

EN

A synthetic overview of the present state of knowledge regarding the use of GPS and INS systems in aerial photogrammetry is presented. Although, the inertial navigation can calculate the position of the aircraft without any help from outside world, a large number of error are introduced. Hence a GPS is used to aid the INS, using a Kalman filter which helps in estimating the errors in the INS and thus updating position to improved accuracy. The deficiencies inherent in both systems as well as the reasons for their integration are considered. Since the use of a GPS system during flight still requires the creation of a net of ground control points and the planning of blocks with sufficient overlap between images, GPS/INS system integration has become a topic of keen interest. For this purpose, the basics of GPS/INS integration and the advantages and disadvantages of this solution are explained. The summary presents conclusions about directions for further development of integrated systems and a brief discussion of the current state of studies on direct georeferencing published in international scientific literature.

PL

Artykuł w sposób syntetyczny ujmuje aktualny stan wiedzy w zakresie wykorzystania systemów GPS i INS w fotogrametrii lotniczej. Mimo że system inercyjny jest w pełni autonomiczny i nie wymaga żadnego wsparcia z zewnątrz, to jednak dokładność ustalenia pozycji ulega stopniowej degradacji w czasie. System GPS jest wykorzystywany, aby wesprzeć INS i przy użyciu filtru Kalmana pomóc w oszacowaniu błędów INS. Omówione zostały zarówno rodzaje błędów towarzyszące obu systemom, jak i przesłanki ich integracji. Ze względu na fakt, że stosowany podczas nalotu system GPS w dalszym ciągu wymaga zakładania osnowy polowej oraz projektowania bloków o odpowiednich pokryciach między zdjęciami, integracja systemów GPS/INS staje się kwestią bardzo aktualną. Wyjaśniono zatem podstawy integracji GPS/INS oraz mocne i słabe strony takiego rozwiązania. W podsumowaniu zawarto konkluzje dotyczące kierunków dalszej pracy nad zintegrowanym systemem oraz zarys stanu badań dotyczących georeferencji wprost zgłaszanych w literaturze światowej.

Słowa kluczowe

EN

GPS; INS; integration; Kalman filter; direct georeferencing; ground control points; aerial photogrammetry

PL

GPS; INS; integracja; filtr Kalmana; georeferencja wprost; osnowa polowa; fotogrametria lotnicza

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Geomatics and Environmental Engineering
• Rocznik: 2011
• Tom: Vol. 5, no. 3
• Strony: 79--87
• Opis fizyczny: Bibliogr. 15 poz., wykr., rys.

Twórcy

autor

Poręba M.

• AGH University of Science and Technology, Faculty of Mining Surveying and Environmental Engineering, Department of Geoinformation, Photogrammetry and Remote Sensing of Environment, Krakow, Poland

Bibliografia

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