scholarly journals Pulse compression of linear chirp signals using a quadrature detector

2011 ◽  
Vol 32 (6) ◽  
pp. 261-263 ◽  
Author(s):  
Nur Mariah Khairah binti Abdul Aziz ◽  
Hirokazu Kurabayashi ◽  
Naohiko Tanaka
Keyword(s):  
Pulse Compression ◽  
Chirp Signals ◽  
Linear Chirp

scholarly journals VERSATILE CHIRP SINE GENERATOR ON FIXED-POINT FPGA

2020 ◽  
Vol 60 (6) ◽  
Author(s):  
Jan Kunz ◽  
Petr Beneš
Keyword(s):  
Fixed Point ◽  
Phase Difference ◽  
Signal Generation ◽  
Vibration Testing ◽  
Chirp Signals ◽  
Linear Chirp ◽  
Pros And Cons ◽  
Sine Signal ◽  
Hardware Platforms ◽  
Point Arithmetic

This paper deals with a logarithmic and a linear chirp sine generation on a fixed-point FPGA mainly for vibration testing, nevertheless, the generator can also be used in other areas. A basic overview of the logarithmic chirp sine signal is provided. Then, methods of software signal generation as well as different hardware platforms are briefly described and their pros and cons are mentioned. A DDS generator on FPGA needs the phase difference between samples as an input. This generation for the logarithm chirp sine signal is presented, and its resolution, errors and limitations on fixed-point arithmetic are revealed. Our implementation runs on Compact RIO 9067, uses 32-bit fixed-point and is able to generate linear and logarithm chirp signals from 10 Hz to 7 kHz with a minimum chirp speed of 1 oct/min.

scholarly journals Investigation of Non-linear Chirp Coding for Improved Second Harmonic Pulse Compression

2017 ◽  
Vol 43 (8) ◽  
pp. 1690-1702
Author(s):  
Muhammad Arif ◽  
Muhammad Asim Ali ◽  
Muhammad Mujtaba Shaikh ◽  
Steven Freear
Keyword(s):  
Pulse Compression ◽  
Second Harmonic ◽  
Linear Chirp ◽  
Non Linear

Exploiting Non-Linear Chirp and sparse deconvolution to enhance the performance of pulse-compression ultrasonic NDT

2012 ◽  
Author(s):  
Marco Ricci ◽  
Sergio Callegari ◽  
Salvatore Caporale ◽  
Marcello Monticelli ◽  
Luigi Battaglini ◽  
...  
Keyword(s):  
Pulse Compression ◽  
Linear Chirp ◽  
Non Linear ◽  
Ultrasonic Ndt

Statistically efficient simultaneous amplitude measurement of multiple linear chirp signals

2021 ◽  
pp. 1-1
Author(s):  
Antonio Moschitta ◽  
Antonella Comuniello ◽  
Francesco Santoni ◽  
Alessio De Angelis ◽  
Paolo Carbone ◽  
...  
Keyword(s):  
Amplitude Measurement ◽  
Chirp Signals ◽  
Linear Chirp

Effect of noise, partial synchronization, and sampling frequency inaccuracies on amplitude measurement of multiple Linear Chirp signals

Measurement ◽  
2021 ◽  
pp. 109635
Author(s):  
Antonio Moschitta ◽  
Antonella Comuniello ◽  
Alessio De Angelis ◽  
Francesco Santoni ◽  
Paolo Carbone
Keyword(s):  
Sampling Frequency ◽  
Partial Synchronization ◽  
Amplitude Measurement ◽  
Chirp Signals ◽  
Linear Chirp
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