DSP and Kalman

http://dspillustrations.com/pages/index.html

http://jackschaedler.github.io/circles-sines-signals/

Fourier transform

https://news.ycombinator.com/item?id=16242103

https://news.ycombinator.com/item?id=9762022 Fourier transform

http://cns-alumni.bu.edu/~slehar/fourier/fourier.html

DSP Book

http://www.ece.rutgers.edu/~orfanidi/intro2sp/

http://www.dspguide.com/pdfbook.htm

https://www.reddit.com/r/programming/comments/3qu1kp/amazing_introduction_to_digital_signal_processing/

http://sam-koblenski.blogspot.com/2015/10/everyday-dsp-for-programmers-signal.html

Kalman

https://habrahabr.ru/post/328146/ Kalman

https://github.com/rlabbe/Kalman-and-Bayesian-Filters-in-Python

https://www.johndcook.com/blog/2016/07/14/kalman-filters-and-functional-programming/

http://www.bzarg.com/p/how-a-kalman-filter-works-in-pictures/

https://news.ycombinator.com/item?id=13449229

https://www.cl.cam.ac.uk/~rmf25/papers/Understanding%20the%20Basis%20of%20the%20Kalman%20Filter.pdf

http://dspguru.com/dsp/faqs/multirate/decimation

http://www.anuncommonlab.com/articles/how-kalman-filters-work/

https://news.ycombinator.com/item?id=11561770

http://www.bzarg.com/p/how-a-kalman-filter-works-in-pictures/

https://github.com/rlabbe/Kalman-and-Bayesian-Filters-in-Python

http://alexander-mikh.livejournal.com/253672.html

http://greg.czerniak.info/guides/kalman1/

http://bilgin.esme.org/BitsBytes/KalmanFilterforDummies.aspx

http://www.cs.unc.edu/~welch/kalman/

http://www.codeproject.com/Articles/469458/Kalman-Filtering-Part

http://www.knewton.com/tech/blog/2013/11/kalman-filter/?utm_source=reddit&utm_medium=r-prog&utm_campaign=distro1

http://habrahabr.ru/post/166693/

http://www.rusdoc.ru/articles/filtr_kalmana__vvedenie/20004/