SYSTEMS AND METHODS FOR JOINT ANGLE-FREQUENCY DETERMINATION

摘要

A system for data acquisition and processing includes a selector for obtaining samples from one or more sensors, each of which is configured to collect a sample during one or more sampling intervals forming a dwell period. The selector is configured to obtain only a subset of samples of a complete set of samples that can be collected during a dwell period. A solver is configured to solve an underdetermined system based on the collected samples and a mapping relation/phase function, to jointly determine one or more angles and one or more frequencies of transmissions received by the one or more sensors.

主权项

1. A method for determining angle and frequency of transmission from a transmitter, the method comprising:
receiving during a current coherent dwell, sensor data comprising a first plurality of samples, the first plurality of samples comprising N samples collected at each one of D sensors, at least one of N and D being greater than one; selecting a second plurality of M samples from the first plurality of samples, M being less than N times D; determining angle and frequency of transmission of a transmitter by minimizing l1 norm of the second plurality of M samples by applying a solver to a product of: (i) a phase functional representing a mapping between a time-distance representation of sensor samples and angle-frequency representation thereof, and (ii) the second plurality of M samples.