Principles of independent receivers for use with co-operative radar transmitters

It is pointed out that the conventional radar with colocated transmitter and receiver is rather susceptible to man-made interference sources. The position of the transmitter can be determined on the basis of the emitted pulses, and this information can be used to direct interfering signals by means of a jammer to the location of the radar. In so-called bistatic radars, the receiver is located some distance away from the transmitter site. The effect of a jamming beam, directed at the transmitter, on the receiver can, therefore, be greatly reduced. However, in connection with an implementation of the less vulnerable bistatic radar, certain difficulties will have to be overcome. The present investigation has the objective to explore approaches for doing this. The geometric configuration of bistatic radar is discussed and methods are considered for providing the various reference signals required at the receiving site.