DISPERSIVE TARGET IDENTIFICATION

摘要

A first frequency agile waveform and additional frequency agile signal waveform(s) having in-phase and a quadrature phase components, each shifted by a different delta frequency, are transmitted in the direction of a possible dispersive target. Return signal(s) each comprising an in-phase component and a quadrature phase component associated with each of the frequency agile waveform(s) are received. The return signal(s) associated with the frequency agile signal waveform(s) are phase shifted by their respective delta frequenc(ies). A combined return signal is generated by combining the first return signal and the additional phase shifted return signal(s). A probability of a potential target is determined when the combined return signal exceeds a threshold.

主权项

1. An apparatus comprising:
a) at least one waveform generator configured to:
i) form a first frequency agile signal waveform comprising:
(1) a first bandwidth; and(2) a first multitude of frequency elements between:
(a) a first lower frequency; and(b) a first upper frequency; andii) form a second frequency agile signal waveform comprising:
(1) a second bandwidth; and(2) a second multitude of frequency elements between:
(a) a second lower frequency; and(b) a second upper frequency, the second lower frequency and second upper frequency are shifted from the first lower frequency and first upper frequency respectively by a first delta frequency; b) at least one transmitter configured to transmit at least the first frequency agile signal waveform and the second frequency agile signal waveform; c) at least one receiver configured to receive:
i) a first return signal comprising:
(1) a first in-phase component; and(2) a first quadrature phase component; andii) a second return signal comprising:
(1) a second in-phase component; and(2) a second quadrature phase component; d) a phase shifter configured to generating a second phase shifted return signal by phase shifting the second return signal by the delta frequency; e) a combiner configured to generate a combined return signal by combining:
i) the first return signal; andii) the second phase shifted return signal; f) a probability module configured to determine a probability of a potential target when the combined return signal exceeds a threshold.