초록 ▼

A Doppler compensated PSK signal processor which receives a plurality of messages from a sensor array and decodes each message for further data processing. The signal processor compensates for the Doppler shift in the message frequency due to the velocity differential between the transmitting vehicl

A Doppler compensated PSK signal processor which receives a plurality of messages from a sensor array and decodes each message for further data processing. The signal processor compensates for the Doppler shift in the message frequency due to the velocity differential between the transmitting vehicle and the sensor array. The message is decoded for a valid identification code from which is derived a time mark related to a specified system time to provide range and direction information for the identified transmitting vehicle. The telemetry data in the message and the time mark are output to a data processing system on an interrupt basis to provide tracking and data analysis for the transmitting vehicle.

대표청구항 ▼

A Doppler compensated PSK signal processor for underwater acoustic telemetry messages having an identity code portion and a status and telemetry portion, said messages being transmitted from a plurality of vehicles moving relative to a sensor array and to each other, comprising means for processing

A Doppler compensated PSK signal processor for underwater acoustic telemetry messages having an identity code portion and a status and telemetry portion, said messages being transmitted from a plurality of vehicles moving relative to a sensor array and to each other, comprising means for processing independently said telemetry message received by each sensor of said sensor array, said processing means for each sensor comprising: (a) means for generating a plurality of timing signals from said received telemetry message, said timing signals tracking the carrier frequency of said received telemetry message to compensate for Doppler frequency shifts due to the movement of the particular transmitting vehicle relative to said sensor array; and (b) means for validating said received telemetry message and generating a timing mark upon recognition of a valid identity code for said particular transmitting vehicle, said validating and generating means being Doppler compensated by said timing signals, and said timing mark establishing a time which is a function of the range of said particular transmitting vehicle from said sensor.