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Integration of inertial navigation system (INS) and global navigation satellite system (GNSS) is usually implemented in engineering applications by way of Kalman-like filtering. This form of INS/GNSS integration is prone to attitude initialization failure, especially when the host vehicle is moving freely. This paper proposes an online constrained-optimization method to simultaneously estimate the...
This work investigates geometric optimization of antenna configuration in lateral geometry for a terrestrial time-of-arrival based self-positioning system, considering optimization confronted by two competing and opposing phenomena, the purely geometric analogy of GPS geometric dilution of precision, and tracking errors in correlation of the pseudorandom sequences, as set by signal-to-noise ratio...
A total of 7 navigation antennas, have been developed by EADS CASA Espacio within the frame of GSTB-V2 and IOV projects. All these antennas have been fully tested and already delivered, showing very good performance and very repetitive results along the models. Different solutions have been studied in order to improve these performances. Both optimizations (amplitude and geometry) lead to great improvement...
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