Abstract: A system for manned or unmanned flying bodies detects covered or hidden targets on the ground by using relatively "longwave" radar radiation for immediately attacking such ground targets, which may be covered by trees for example, but located on a strip of ground extending with a given width below the flight path of the flying body travelling in low altitude flight. Four radar receiver antennas are equally spaced from each other along the wings of the flying body and one transmitter antenna is located between two pairs of receiver antennas. The receiver signals are submitted by a fast Fourier transformation for providing a wavefront reconstruction. The so transformed, received signals are then evaluated in accordance with the known SAR principle directly as the signals are received and transformed by correlation with expected signal functions, so-called reference function, for producing a control signal for the direct or indirect discharge of a weapon.

Abstract: A flying object is precisely steered by determining the position of the fng object with the aid of a trigonometric calculation. For this purpose pulse signals emitted in synchronism from two ground stations are received by the flying object and the time difference between the two arrivals is measured. The flying object is also equipped with a clock which is synchronized with the clocks of the two ground stations. Thus, the emitting times are available in the flying object. Based on the measured time difference between the receipt of the two pulses and on the given emission time the coordinates of the actual position of the flying object are calculated. The calculated position coordinates are compared with position coordinates of a rated course stored in the airborne equipment whereby a course deviation signal is calculated. The course deviation signal is then applied to the steering mechanism of the flying object to bring the latter back onto the rated course.