Abstract: When determining the detailed radar reflection cross-section of a radar target by ISAR techniques it is a known problem that one of the target motion components is to be compensated. This was done in the past by complicated numerical calculations of the path of the target. According to the described method, the motion compensation is determined by means of an auxiliary signal which is transmitted form the target. The described method enables the achievement of a radar reflection cross-section by real time data processing of the signals received. Also an apparatus for performing the method is described.

Abstract: A process and an apparatus for transferring information representing a plurality of parameters which are each indicated by a plurality of digits of different weight. The parameters may represent a plurality of measurable states of an arbitrary type, e.g. two coordinates on a display, the parameter value being a measure of the state. The most important digit is first transferred from all the parameters in a predetermined sequence, and then the digit next in importance from all the parameters in the same predetermined sequence, and so on, until a desired accuracy or resolubility for the parameter values has been achieved, depending upon the state of operation, and transfer of information is then discontinued so that the row of digits is not necessarily transferred entirely.