Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Hague, David A."'
Autor:
Hague, David A.
This paper characterizes the mainlobe and sidelobe structure of the Multi-Tone Sinusoidal Frequency Modulated (MTSFM) transmit waveform's narrowband Ambiguity Function (AF) for active sonar applications. The MTSFM waveform's modulation function is re
Externí odkaz:
http://arxiv.org/abs/2312.05188
Autor:
Felton, David G., Hague, David A.
This paper describes a gradient-descent based optimization algorithm for synthesizing Multi-Tone Sinusoidal Frequency Modulated (MTSFM) waveforms with low Auto-Correlation Function (ACF) sidelobes in a specified region of time delays while preserving
Externí odkaz:
http://arxiv.org/abs/2304.11386
Autor:
Felton, David G., Hague, David A.
This paper describes a gradient-descent based optimization algorithm for synthesizing Constant Envelope Orthogonal Frequency Division Multiplexing (CE-OFDM) waveforms with low Auto-Correlation Function (ACF) sidelobes in a specified region of time-de
Externí odkaz:
http://arxiv.org/abs/2303.07286
Autor:
Felton, David G., Hague, David A.
This paper investigates the radar Ambiguity Function (AF) properties of Constant Envelope Orthogonal Frequency Division Multiplexing (CE-OFDM) waveforms employing Phase-Shift Keying (PSK). The CE-OFDM is in fact a special case of the Multi-Tone Sinus
Externí odkaz:
http://arxiv.org/abs/2303.06009
Autor:
Hague, David A.
Phase Coded (PC) waveforms possess desirable Auto-Correlation Function (ACF) properties for use in radar and sonar systems. However, their spectra possess high spectral leakage due to the abrupt phase transitions between the chips in the waveform. Th
Externí odkaz:
http://arxiv.org/abs/2201.08219
The Lerche-Newberger formula simplifies harmonic sums of Bessel functions and has seen application in plasma physics and frequency modulated quantum systems. In this paper, we rigorously prove the formula and extend the classical result to a family o
Externí odkaz:
http://arxiv.org/abs/2201.00630
Autor:
Hague, David A.
Recent research efforts in the Anti-Submarine Warfare (ASW) community have focused on developing sonar systems that adapt to their acoustic environment, referred to as "cognitive" sonars. Cognitive active sonar systems utilize principles of the perce
Externí odkaz:
http://arxiv.org/abs/2111.08746
Autor:
Hague, David A., Tidwell, Matthew D.
The frequency dependent beampatterns of an active sonar projector filters the acoustic signal that is transmitted into the medium, also known as the transmit waveform. This filtering encodes information about the target's bearing relative to the main
Externí odkaz:
http://arxiv.org/abs/2107.12827
Autor:
Adhikari, Kaushallya, Hague, David A.
This paper explores the design of constant modulus Matched-Illumination (MI) waveforms using the Multi-Tone Sinusoidal Frequency Modulation (MTSFM) waveform model. MI waveforms are optimized for detecting targets in known noise and clutter Power Spec
Externí odkaz:
http://arxiv.org/abs/2105.11517
Autor:
Hague, David A.
This paper presents a method for generating a family of waveforms with low in-band Auto/Cross-Correlation Function (ACF/CCF) properties using the Multi-Tone Sinusoidal Frequency Modulated (MTSFM) waveform model. The MTSFM waveform's modulation functi
Externí odkaz:
http://arxiv.org/abs/2002.11742