RADAR DETERMINATION OF VELOCITY DATA FROM AN OBSERVATORY SATELLITE

We obtain for several geometric situations the expression for the probability of insufficiently accurate data on the velocity of a surface target as a function of the parameters scan rate, nearest approach distance of an observatory satellite, the detection radii of the radar and the probability of detection per scan. The actual number of observations taken per pass of the satellite is random and in one instance we give explicitly the expectation of the probability of accurate data. This expectation can be calculated in other cases. This paper allows the determination of the capability of the radar necessary to produce an acceptable probability of obtaining accurate velocity information.