HYDROACOUSTIC LAG Russian patent published in 2008 - IPC G01S7/52 G01P3/42 

FIELD: instrument engineering.

SUBSTANCE: hydroacoustic lag includes four-vibrator hydroacoustic antenna connected through the receive-transmit commutator to the generator and four-channel amplifier-transformer, two circuits of the output signal formation, switches and an indicator unit. Two frequency transformers and a differential frequency filter are introduced between the outputs of the amplifier-transformer and the two outputs of each of the output signal forming circuits. At the operability of all of the lag channels, the outputs of the amplifier-transformer are connected to the output signal formation circuits through the switches. Should any of the channels fail, the respective input of the output signal formation circuit gets connected to the output of the end frequency transformer through the switch, and the input of the first frequency transformer gets connected to the output of the channel connected to the acoustic antenna vibrator which axis lays in the same plane as the faulty channel vibrator axis.

EFFECT: raise in lag operation dependability.

2 dwg