Abstract: A method of determining speed and heading of a rover/rover having one degree of freedom comprising the following steps: (A) determining a rover position coordinates using at least one source of a radio position measurements; (B) storing a set of statistically different rover points in a memory block, and (C) using a subset of rover points including a plurality of stored rover points and a current rover point to determine a speed and a heading of the rover. It is assumed that each rover point comprises a time Epoch and a rover position determined at time Epoch, and that each pair of statistically different rover points comprises two rover positions separated by a statistically significant distance.

Abstract: A method for estimation of relative coordinates between at least two parts of a system. The method generally includes two main steps: measuring a set of relevant coordinates for each part of the system; and processing each measurement result to estimate the relative coordinates between at least two parts of the system. The system includes a main body and at least one sub assembly. A first sensor A is configured to measure a movement rate of a sub assembly. A second sensor B is configured to measure a movement rate of a main body. A third absolute measurement sensor C is configured to estimate an integrator offset and a drift rate due to the first sensor A bias and due to the second sensor B bias.

Abstract: A method for performing system characterization in situ for a system comprising a actuator controlled by a proportional controller. The system includes a quasi-linear region characterized by a slope of the system response and by a delay in the quasi-linear region of the system. The system includes at least one dead zone (DZ).