# Questions tagged [polar]

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### Covariance Matrix Polar to Cartesian

Let $R$ and $\Theta$ be zero mean independent Gaussian random variables with variances $\sigma_R^2$ and $\sigma_\Theta^2$ respectively. Hence their covariance matrix would be diagonal give by C_{R,\...
77 views

### Why not use a complex number in the exponent in the z-transform?

I am trying to comprehend how the z-transform has come to be similar but different from its continuous counterpart, namely the Laplace transform. It seems to me that the most parallel and intuitive ...
30 views

### Binary Polar vs 4-PAM Signalling

Why is binary polar signalling not feasible for a data rate of 2.0Mbps within a bandwidth not exceeding 1MHz? Is it due to the fact that binary signalling can only transfer 1 bit of data per symbol ...
263 views

### Interpolation formula for two dimensional signal reconstruction in the frequency domain from polar samples

In the book, Advanced Topics in Shannon Sampling and Interpolation Theory by Robert J. Marks II, one may find an interpolation formula for reconstructing a two dimensional signal from regular polar ...
266 views

### Which parameters defines a polar plot?

I need to convert a polar plot into a short array of 3-5 values. This array should describe the polar plot as best as possible. For example, I know that I can use the beamwidth which is also known as ...
231 views

### Addition of two signals in polar coordinates

There is quadrature detector which receive radio signal and return its amplitude and instantaneous phase after performing hilbert transformation and transferring the signal to zero frequency. The main ...
1k views

### How to change the angle unit labels on polar plot in MATLAB?

I hope this is not off-topic. I'm wondering is there anyway to change the default angle unit label in MATLAB polar plot. The default angle label is from 0 to 360, at 30 increment. It goes like 0,30,60,...
Suppose we have a complex signal $\cos(2\theta) + j\sin(2\theta) = e^{j2\theta}$. Is there any way to find half-angle $\cos(\theta) + j\sin(\theta) = e^{j\theta}$ complex signal without going into ...