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GNSS positioning algorithms using methods of reference point indicators

Oszczak B.

Artificial Satellites : Journal of Planetary Geodesy

2014

Vol. 49, No. 1

21--32

The GNSS standard positioning solution determines the coordinates of the GNSS receiver and the receiver clock offset from measurements of at least four pseudoranges. For GNSS positioning, a direct solution was derived for five and ten observed satellites without linearisation of the observation equations and application of the least squares method. The article presents the basic principles of methods for solving the positioning problem, the formulas and their derivation. The numerical examples with simulated pseudorange data confirm the correct performance of the proposed algorithm. The presented algorithms should be further tested with real measurements in other domains of positioning and navigation as well.

Model of final navigation segment for combat unmanned aerial vehicle

Koruba Z.

Journal of Technical Physics

2003

Vol. 44, no 1

99-115

The paper presents the concept of unmanned aerial vehicle (UAV) application to direct destruction of ground targets (radar stations, combat vehicles or tanks). The kinematic model of UAV motion takes into account individual stages of the mission performed by the vehicle, i.e. programme-run flight in target seeking, tracking flight following the target detection and flight in target homing. The law was stated for the control of UAV autopilot.