Nicholas L Johnson

US Patent:

20200033441, Jan 30, 2020

Filed:

Jul 25, 2018

Appl. No.:

16/045354

Inventors:

- San Diego CA, US
Nicholas T. Johnson - San Diego CA, US
Nicholas A. Lumsden - Escondido CA, US
Colin J. O'Brien - San Diego CA, US

Assignee:

United States of America as represented by Secretary of the Navy - San Diego CA

International Classification:

G01S 7/282

Abstract:

A radar pulse generator includes a multiplexer, a polyphase synthesizer, a first signal channel and a second signal channel. The multiplexer has a baseband radar pulse input, a multiplexer control input, a first channel output and a second channel output. The baseband radar pulse input signal is a single channel baseband radar pulse signal. The multiplexer control input signal selects one of the group consisting of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired radar pulse signal based on the synthesized first channel output signal and the synthesized second channel output signal. The first signal channel provides the first channel output signal from the first channel output to the polyphase synthesizer. The second signal channel provides the second channel output signal from the second channel output to the polyphase synthesizer.

US Patent:

20170279643, Sep 28, 2017

Filed:

Mar 24, 2017

Appl. No.:

15/468168

Inventors:

- San Diego CA, US
Nicholas T. Johnson - San Diego CA, US
Nicholas A. Lumsden - Escondido CA, US

Assignee:

United States of America as represented by Secretary of the Navy - San Diego CA

International Classification:

H04L 27/00
H04L 27/233

Abstract:

A signal detection method that allows characterization of a modulated signal to be efficiently determined. The method comprises the steps of receiving a data signal, processing the data signal to determine its value squaring the value of the signal; filtering the squared signal value to remove DC content; evaluating the resulting signal to determine if a single sinusoidal value remains; and determining that the presence of a single sinusoidal value as the resulting signal from the squaring and filtering steps indicates that the received data signal is a phase-shift key signal or conversely that the absence of such after a given number of cycle of squaring and filtering indicates a different modulation technique is present in the signal.

Address:

5655 Andros Pl APT 5, San Diego, CA 92115

Phone:

6199938083

VIN:

1G1PD5SH1C7197915

Make:

CHEVROLET

Model:

CRUZE

Year:

2012