REAL—TIME AND GENERAL—PURPOSE TIME—COMPRESSED CORRELATOR

摘要

The time-compressed correlator has been widely applied in active sonar design since 1960‘s.Theprinciples of DELTIC and MACORMATIC cannot be directly used in passive sonar due to the limita-tion of sampling frequency and data length.Otherwise the input data will be missed periodically in thesystem output.An Alternative Access Time-Compressed Correletor(ALATIC)is proposed in thispaper.By using a buffer register the correlation operation of arbitrary length can be done in real time.This model is a general purpose correlator,which can be used in both active and passive sonars.The run-ning positive order and inverse order register and the shift positive order and inverse order model arepresented.The hardware implementation and the flow chart graph of ALATIC are also described.Themodel presented in this paper can be used in digital sonar design.