METHOD FOR SYNCHRONIZING SHIPBOARD SONARS Russian patent published in 2004 - IPC

FIELD: radio and sonar engineering. SUBSTANCE: sounding pulses are shaped in master station to start sync signals and to transfer them over radio link to slave stations. Upon arrival of sync signals at slave stations the latter radiate sounding pulses whose repetition period is adjusted to that of master-station sounding signals considering time taken by sounding pulses to pass through propagating medium. Master station disposed on board flagship is hydroacoustic station that radiates sounding pulses in compliance with uniform schedule of hydroacoustic station radiation moments for all ships of group. Sync signals are transferred over radio link to slave stations, which are hydroacoustic stations, in the form of digital code of hydroacoustic station radiation moments, sounding pulse repetition period being computed proceeding from keeping four periods within double-length time interval of sounding signal passage through water medium from master hydroacoustic station to slave one. EFFECT: eliminating jamming when all same-type hydroacoustic stations of ship group function at a time. 1 cl, 2 dwg