# Questions tagged [chirp]

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### Complex nature of chirped signal

In a book on optical solitons, the author says that a Gaussian signal pulse has the form- $u(t) = \exp((\eta + i\beta)t^2)$ where $\beta$ is the chirp parameter. My question is: what does the $i$ ...
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### FMCW Triangle Modulation

I am trying to generate FMCW with triangle waveform modulation in python. I was able to generate linear FMCW waveform. I am stuck at coming up with equation for triangle modulation for FMCW liDAR/...
62 views

### How to perform dechirping of SAR image in MATLAB?

I have the transmitted pulse and the raw SAR image before range compression (dechirping). I understand the pulse compression its a convolution along the columns but I am not able to make it work. I've ...
42 views

### Detect playback position in swept sine sweep

I am wondering what the most precise method is to detect the playback sample position of a sine sweep? The real playback sample position is unknown and an DSP with constraint computing capabilities ...
28 views

### Detecting multi-path propagation when one acoustic signal is dominant

I am sending an acoustic signal from a source to a receiver where there are limited number of paths the signal can travel. I want to detect if there has been multipath propagation or not when one path ...
134 views

### On generalizing Gabor-Heisenberg uncertainty in a noisy environment

The Gabor-Heisenberg uncertainty represents the fundamental limit of time and frequency resolution one can extract from a signal. $\sigma_t \sigma_f \geq \frac{1}{4\pi}$ My question is: what happen ...
207 views

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### Chirp signal FFT

I am doing some system identification using different signals such as single tone, multi tone, chirp and so on. These days I was trying to get an FFT of a chirp signal and I found a nice code here on ...
546 views

I've been working with an FMCW Fast Chirp radar transceiver. Mainly, I've been looking at the Doppler range map but really it is not suitable as there is only one point per range/ speed and I want to ...
1k views

### Problems Using FFT to Compute Impedance in a Model Neuron

I'm a neuroscientist currently investigating the resonance properties of a single neuron model that a colleague and I have constructed. The language we code in is Julia, which I hope is similar enough ...
670 views

### Confused with filtering linear chirp signal using band-pass filter

everyone. Recently, I am doing simulations about filtering a linearly chirp signal, and have been confused about the result. The signal was linearly chirped from 0 to 1000 Hz. At first, the chirping ...