Array system with high resolving power

摘要

An array with high resolving power and low secondary lobe levels, comprising a receiving array formed of transducers along its length LR, two of these transducers, separated by a distance LE, also forming the transmitters. The change from transmission to reception and back is effectuated by switches. Signals received by transducers are weighted by resistors before being delivered to beam forming circuits, containing multi-terminal phase shifters and a wiring matrix and adders. The weighting function and ratio LE/LR are chosen to ensure that the overall transmission-reception system diagram has high resolving power and low secondary lobe levels.