chirp signals
Filtering in the joint time/chirp-rate domain for separation of quadratic and cubic phase chirp signals
... of signals with that known IF, by mask- ing in the EFT domain and then taking the inverse ...interference chirp signals with nonlinear phase functions in direct sequence spread spectrum communication ...
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Aspects of Radar Imaging Using Frequency-Stepped Chirp Signals
... Radar range resolution is determined by the bandwidth of the transmitted pulse. Classically, high range resolution is ob- tained by either transmitting very short pulses, or modulat- ing the pulse to achieve the required ...
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Classification of Multi User Chirp Modulation Signals Using Wavelet Higher Order Statistics Features and Artificial Intelligence Techniques
... analog signals in [2] and have been recently extended to digital types of signals used in modern communication systems ...multi-user chirp signals in additive white Gaussian noise channels. ...
14
Chirp decoder : influence of noise and reverberation
... test signals were sent from and received by a Macbook laptop with an M-Audio external sound ...100 chirp signals in each test, giving the number of decoding successes and failures upon ...
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Investigation of Non-linear Chirp Coding for Improved Second Harmonic Pulse Compression
... (NLFM) chirp coding was investigated to improve the pulse compression of the second harmonic chirp signal by reducing the range sidelobes ...NLFM chirp was compared with the reference linear ...
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A Robust Watermarking Against Shearing Based on Improved S-Radon Transformation
... The chirp signals are used as watermarks and this type of signals is resistant to all stationary filtering methods and exhibits geometrical ...the chirp signals used as watermarks ...
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Time-Frequency Signal Synthesis and Its Application in Multimedia Watermark Detection
... linear chirp signals from the TF plane by signal synthesis method using polynomial- phase ...of signals in different noise levels at different frequency modulation ...
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Radar matched filtering using the fractional fourier transform
... target chirp signals with band width of 200 kHz and 500 kHz respectively are considered ...target chirp signals start at the same time and are completely overlapped in time as seen in ...both ...
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An Underwater Channel Model and Chirp Slope Keying Modulation Scheme Performance
... Linear chirp signals generally refer to frequency modulation in radar and sonar communications ...[4]. Chirp modulation was first introduced in radar data transmission to enhance range resolution ...
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Superharmonic imaging with chirp coded excitation: Filtering spectrally overlapped harmonics
... tion signals. The signals were amplified by an A150 RF Power Amplifier (Electronics & Innovation ...amplified chirp signals were transmitted by a ...
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Neural Network for Classification of Multi-User Chirp Modulation Signals using Wavelet Higher Order Statistics Features
... analog signals, but the recent contributions focus on digital ...multi-user chirp signals in additive white Gaussian noise channels where all the used chirp signals are selected to have ...
8
Recognition of variable courtship song in the field cricket Gryllus assimilis
... is also present (Fig.5, stimulus 11), whereas songs with chirps containing only 17kHz are ineffective (Fig.5, stimulus 10). However, a song containing a series of harmonics from 10.5 to 17kHz is highly effective, ...
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Temperature Coupling and ‘Trade Off’ Phenomena in the Acoustic Communication System of the Cricket, Gryllus Bimaculatus De Geer (Gryllidae)
... Female phonotaxis and the interaction of calling song properties Interaction of chirp period and syllable period Chirp period affected the range of syllable periods that females tracked [r] ...
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High resolution seismology, archaeology and submerged landscapes an interdisciplinary study
... All resolutions pertaining to systems deployed in the course of this thesis refer to the actual resolution observed in the final processed data. It is common practice amongst seismologists to refer to the near- field ...
256
Adaptive Algorithm for Chirp-Rate Estimation
... the chirp-rate, is important in radar systems, for example, focusing of the SAR images [8, ...a chirp-rate estimator based on the cubic phase function (CPF) [10– ...nonparametric chirp- rate ...
9
The Child Illness and Resilience Program (CHiRP): a study protocol of a stepped care intervention to improve the resilience and wellbeing of families living with childhood chronic illness
... the CHiRP intervention will be associated with positive changes in the key outcome ...effective, CHiRP will provide an opportunity for the health sector to deliver ...
10
Stimulus frequency differentially affects chirping in two species of weakly electric fish: implications for the evolution of signal structure and function
... communication signals similar to chirps, it is not entirely clear why stimulus removal might increase rise ...dominance signals produced in other fish species (Doutrelant et ...victory signals, ...
9
Marine sediment classification using the chirp sonar
... Using this simple calibration procedure, normal incident reflectivity values obtained from the chirp sonar are used to predict porosity, density, grain size, rigid-. ity, and sound [r] ...
10
Vestigial singing behaviour persists after the evolutionary loss of song in crickets
... long chirp, (2) number of short chirps, (3) average number of pulses per short chirp, (4) total song length, (5) length of short chirps, (6) long chirp length, (7) inter-song- interval, (8) final ...
18
Audio Signals and Spectra
... We are learning that a signal can be represented either in the time domain or in the frequency domain. Learning some basic realities of this dual representation will be an important goal of this course. One of the ...
6