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We study the effect of parameter fluctuations on synchronization of a coupled chaotic system. The fluctuations to the parameter can be random or it can be a periodic modulation. For random fluctuations we introduce a new quantity, the…

Chaotic Dynamics · Physics 2007-07-24 M. P John , P. U Jijo , V. M Nandakumaran

It is argued based on the results of both numerical modelling and the experiments performed on an artificial substitute of a meadow that the sound emitted by animals living in a dense surrounding such as a meadow or shrubs can be used as a…

Traffic safety is the foremost value that automotive radar systems aim to pursue. Unlike in mobile communication systems, the literature for radar systems did not adequately address inter-radar interference and security threats such as…

Signal Processing · Electrical Eng. & Systems 2020-08-04 Thomas Moon , Jounsup Park , Seungmo Kim

Insects and hummingbirds exhibit extraordinary flight capabilities and can simultaneously master seemingly conflicting goals: stable hovering and aggressive maneuvering, unmatched by small scale man-made vehicles. Flapping Wing Micro Air…

Robotics · Computer Science 2019-02-27 Fan Fei , Zhan Tu , Yilun Yang , Jian Zhang , Xinyan Deng

We investigate the theory of affine groups in the context of designing radar waveforms that obey the desired wideband ambiguity function (WAF). The WAF is obtained by correlating the signal with its time-dilated, Doppler-shifted, and…

Information Theory · Computer Science 2022-07-05 Kumar Vijay Mishra , Samuel Pinilla , Ali Pezeshki , A. Robert Calderbank

The large active wing deformation is a significant way to generate high aerodynamic forces required in bat flapping flight. Besides the twisting, the elementary morphing models of a bat wing are proposed, such as wing-bending in the…

Fluid Dynamics · Physics 2015-05-15 Guan Zi-Wu , Yu Yong-Liang

Radar simulation is a promising way to provide data-cube with effectiveness and accuracy for AI-based approaches to radar applications. This paper develops a channel simulator to generate frequency-modulated continuous-wave (FMCW) waveform…

Signal Processing · Electrical Eng. & Systems 2023-07-19 Yuan Liu , Moein Ahmadi , Johann Fuchs , Mohammad Alaee-Kerahroodi , M. R. Bhavani Shankar

A fundamental Doppler-like but asymmetric wave effect that shifts received signals in frequency in proportion to their respective source distances, was recently described as means for a whole new generation of communication technology using…

General Physics · Physics 2009-11-13 V. Guruprasad

Emitting phased array RF systems have to contend with an ever-increasing number of eavesdroppers as technological advancements provide lower cost and/or more capable radios. Often, eavesdroppers can accumulate sufficient information…

Signal Processing · Electrical Eng. & Systems 2025-03-18 David Couto , Arash Samani , Alec Yonika

Frequency modulated (FM) frequency combs constitute an exciting alternative to generate equidistant spectra. The full set of Maxwell-Bloch equations is reduced to a single master equation for FM combs with fast dynamics to provide insight…

Optics · Physics 2019-12-18 Nikola Opačak , Benedikt Schwarz

Magnetic measurement can be performed by various sensors, such as SQUID and Giant Magnetoresistance. This device can achieve high accuracy while losing efficiency and convenience. The model of biological magnetic sensing in avian proposes a…

Quantum Physics · Physics 2022-02-25 Wei-Yin Chiang , Yuan-Chung Cheng , Min-Hsiu Hsieh

Unmanned aerial vehicle (UAV) swarms must exploit machine learning (ML) in order to execute various tasks ranging from coordinated trajectory planning to cooperative target recognition. However, due to the lack of continuous connections…

Machine Learning · Computer Science 2020-06-11 Tengchan Zeng , Omid Semiari , Mohammad Mozaffari , Mingzhe Chen , Walid Saad , Mehdi Bennis

Mutual interference in automotive radar scenarios is going to become a major concern as the density of vehicles with radar sensors in the roads increases. The present work tackles the problem of frequency modulated continuous wave (FMCW) to…

Signal Processing · Electrical Eng. & Systems 2021-06-11 Aitor Correas-Serrano , María A. González-Huici

The performance of collaborative beamforming is analyzed using the theory of random arrays. The statistical average and distribution of the beampattern of randomly generated phased arrays is derived in the framework of wireless ad hoc…

Information Theory · Computer Science 2016-08-31 Hideki Ochiai , Patrick Mitran , H. Vincent Poor , Vahid Tarokh

We review the modulation stability of parallel propagating/field aligned Whistler Mode Chorus waves propagating in a warm plasma from a formal perspective with a focus on wave-particle interactions. The modulation instability criteria is…

Plasma Physics · Physics 2023-05-26 Daniel Ratliff , Oliver Allanson

In this paper, the interference mitigation for Frequency Modulated Continuous Wave (FMCW) radar system with a dechirping receiver is investigated. After dechirping operation, the scattered signals from targets result in beat signals, i.e.,…

Signal Processing · Electrical Eng. & Systems 2022-03-09 Jianping Wang , Min Ding , Alexander Yarovoy

Efficient manipulation of spin waves (SWs) is considered as one of the promising means for encoding information with low power consumption in next generation spintronic devices. The SW Doppler shift is one important phenomenon by…

Applied Physics · Physics 2023-10-27 Shaojie Hu , Kang Wang , Tai Min , Takashi Kimura

A large sample of about two hundred pulsars have been observed to study their subpulse modulation at an observing wavelength of (when achievable) both 21 and 92 cm using the Westerbork Synthesis Radio Telescope. For 57 pulsars drifting…

Astrophysics · Physics 2009-11-13 Patrick Weltevrede , Ben Stappers , R. T. Edwards

We exploit the impact of exact frequency modulation on transition time of steering nuclear spin states from theoretical point of view. 1-stage and 2-stage Frequency-Amplitude-Phase modulation (FAPM) algorithms are proposed in contrast with…

Quantum Physics · Physics 2013-11-19 Boyang Liu , Ming Zhang , Hong-Yi Dai

Flow matching offers a robust and stable approach to training diffusion models. However, directly applying flow matching to neural vocoders can result in subpar audio quality. In this work, we present WaveFM, a reparameterized flow matching…

Sound · Computer Science 2025-03-24 Tianze Luo , Xingchen Miao , Wenbo Duan
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