Results 11 to 20 of about 101,995 (301)

Fractional ambiguity function: Properties and uncertainty inequalities in signal processing

open access: yesFranklin Open
This article presents the construction of the fractional ambiguity function by combining the definition of the ambiguity function and the kernel of the fractional Fourier transform.
Mawardi Bahri   +3 more
doaj   +2 more sources

Ambiguity and Social Interaction [PDF]

open access: yes, 2005
We present a non-technical account of ambiguity in strategic games and show how it may be applied to economics and social sciences. Optimistic and pessimistic responses to ambiguity are formally modelled.
Kelsey, David   +3 more
core   +2 more sources

Experimental Results of Underwater Acoustic Communication with Nonlinear Frequency Modulation Waveform

open access: yesSensors, 2021
In this paper, we propose underwater acoustic (UWA) communications using a generalized sinusoidal frequency modulation (GSFM) waveform, which has a distinct ambiguity function (AF) and correlation function characteristic.
Jeongha An   +3 more
doaj   +1 more source

ANALYSIS OF THE CHIRPLET TRANSFORM-BASED ALGORITHM FOR RADAR DETECTION OF ACCELERATED TARGETS

open access: yesRadio Physics and Radio Astronomy, 2017
Purpose: Efficiency analysis of an optimal algorithm of chirp signal processing based on the chirplet transform as applied to detection of radar targets in uniformly accelerated motion.
V. G. Galushko, D. M. Vavriv
doaj   +1 more source

Combined Radar and Communications With Phase-Modulated Frequency Permutations

open access: yesIEEE Open Journal of the Communications Society, 2023
This paper focuses on the combined radar and communications problem and conducts a thorough analytical investigation on the effect of phase and frequency change on the communication and sensing functionality.
Tian Han   +5 more
doaj   +1 more source

Ultra-Low Sidelobe Waveforms Design for LPI Radar Based on Joint Complementary Phase-Coding and Optimized Discrete Frequency-Coding

open access: yesRemote Sensing, 2022
In this paper, in order to reduce the probability of the radar waveform intercepted by the passive detection system, the time-bandwidth product of the radar waveform is increased, and the detection probability of the radar waveform to the target is ...
Yuxiao Song   +5 more
doaj   +1 more source

Ambiguity and Social Interaction [PDF]

open access: yes
We present a non-technical account of ambiguity in strategic games and show how it may be applied to economics and social sciences. Optimistic and pessimistic responses to ambiguity are formally modelled.
Jurgen Eichberger   +2 more
core   +6 more sources

Time delay estimation issues for target detection and transmitter identification in multistatic radars

open access: yesEngineering Reports, 2020
Time delay estimation (TDE) is an active research area due to its importance in a wide range of applications, such as target detection and transmitter identification.
Dillip Dash, Valarmathi Jayaraman
doaj   +1 more source

On the Derivative Imbalance and Ambiguity of Functions [PDF]

open access: yesIEEE Transactions on Information Theory, 2019
In 2007, Carlet and Ding introduced two parameters, denoted by $Nb_F$ and $NB_F$, quantifying respectively the balancedness of general functions $F$ between finite Abelian groups and the (global) balancedness of their derivatives $D_a F(x)=F(x+a)-F(x)$, $a\in G\setminus\{0\}$ (providing an indicator of the nonlinearity of the functions).
Shihui Fu   +3 more
openaire   +4 more sources

Precise Method of Ambiguity Initialization for Short Baselines with L1-L5 or E5-E5a GPS/GALILEO Data

open access: yesSensors, 2020
This paper presents a precise and fast method of ambiguity resolution (PREFMAR) for frequencies L1/E1 and L5/E5a of GPS/GALILEO data. The developed method is designed for precise and fast determination of ambiguities in GNSS phase observations ...
Mieczysław Bakuła
doaj   +1 more source

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