Questions tagged [non-linear]
The non-linear tag has no usage guidance.
8
questions
2
votes
3
answers
8k
views
What is the advantage of weighted median filter over median filter?
I could not find any proof or comparison of weighted median and median filters. Yes the more occurring pixel contributes much but what should be the criteria of choosing weight function. And any ...
7
votes
1
answer
2k
views
Precisions on Hilbert Huang transform
After investigating signal analysis methods based on empirical mode decomposition (EMD), I found that recent developments are mostly related to the Hilbert Huang transform (HHT) and the Local Mean ...
- 71
4
votes
3
answers
1k
views
Dynamic convolution vs Volterra series
I'm trying to understand how a dynamic convolution model relates to something like a Volterra series, and what kinds of effects the latter can capture that the former can't (and vice versa). By ...
- 507
1
vote
1
answer
184
views
What is meant by "Cubic Difference Frequency"?
The cubic difference frequency (or 3rd degree intermodulation product) is given by:
$$D_3 = - 10\log\left(\frac{P_2\left(2 f_{1,2} - f_{2,1}\right)}{P_2\left(f_1,f_2\right)}\right)$$
where $P_2$ is ...
user25356
6
votes
1
answer
652
views
Extended Kalman Filter for Linear Systems with Non Linear Measurements
I'm successfully using an Extended Kalman Filter for object tracking. My state vector ($x, y, v_x, v_y$) needs to be in cartesian coordinates. The measurement data is transmitted in polar coordinates.
...
- 95
3
votes
2
answers
531
views
Alias-free digital nonlinear filter design
@Jazzmaniac has a good answer to the question of how to design an alias-free digital nonlinear time-invariant filter here: https://dsp.stackexchange.com/a/28787/18276
Basically, according to that ...
- 507
2
votes
1
answer
6k
views
Kalman Filter to estimate 3D position of a node
Code given on this link works for 1D:
Kalman filter for position and velocity: introducing speed estimates
In my problem I need to estimate 3D position.What is the criteria ?
How F, G ,H,Q and R ...
- 97
2
votes
1
answer
2k
views
Possibilties of chebyshev polynomial waveshaping
When talking about harmonic distortion, or more specifically waveshaping, we say the order of distortion, can be solved from the equation:
$x^n$
Where n is the order of distortion. To my knowledge ...
- 348