Optimum distribution of navigational position and velocity sessions for a spacecraft with remote sounding of the earth using data from integrated navigation complexes

The problem of increasing the mission efficiency of a spacecraft with remote sounding of the Earth using optimum distribution of sessions at time intervals is discussed. The problem is treated as one of optimum control of a dynamic system defined by a discrete analog of a Riccati differential equation. A method based on reducing the initial non-linear problem to the equivalent linear one with a larger number of equations is used. The results obtained for both the presence and absence of noise in the motion models are analyzed. The effect of unobservability zones on the result is estimated.