Narrowband signal revealer
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorJames W. Bond
Life of this patent
Estimating the term…
Abstract
The narrowband signal revealer comprises a sensor, a baseband generator, an daptive locally optimum processor (ALOP), and a complex signal spectral analyzer. The sensor generates an input signal representative of a tonal signal masked by wideband interference. The baseband generator transforms the input signal into a complex baseband signal. The ALOP processes the complex baseband signal to suppress the interference and generates a complex output signal representative of the tonal signal. The spectral analyzer then analyzes the complex output signal and displays tonal signal power.
Claims14
A method for processing an input signal having a tonal structure within a frequency band, wherein said input signal is substantially masked by an interfering signal, comprising the steps of:
- generating a complex signal from said input signal;
- and
- subjecting said complex signal to an adaptive locally optimum process to generate a combined signal representative of said tonal structure.
An apparatus for revealing a tonal structure of an input signal within a frequency band, wherein said input signal is substantially masked by an interfering signal, comprising:
- a basebander operably coupled to said input signal to form a complex signal;
- and
- an adaptive locally optimum processor operably coupled to said complex signal to form a combined signal representative of said tonal structure.
Dependencies are inferred from the claim text.