## Binary Representation of Numbers

Any digital information, whether it is text, music, an image, a video, or any data, is represented by a sequence of numbers, and these numbers are encoded in binary.

Check the cheat sheet to know how integers, fixed-point numbers and floating-point numbers are represented in binary.

## GNSS Open Signals Characteristics

Nowadays, with the different GNSS constellations and all the open signals available in each constellation, it is not always easy to remember every characteristics of every signal.

Therefore, check the cheat sheet to see at a glance the main characteristics of all the GNSS open signals.

## International Mathematics and Units Writing Guidelines

Have you noticed that minute is shorten sometimes as min and sometimes as mn? Likewise for hour with h and hr, for second with s and sec, for gram with g and gr, and for many other units.

Check the cheat sheet to see at a glance the main rules about writing correctly mathematical symbols, units symbols, and quantities.

## Mathematical Series

What happens when you had an infinite quantity of positive numbers?

That’s not a trivial question, because the answer is not straightforward. It depends on what kind of numbers you are summing!

## Sine & Cosine

The functions sin and cos are omnipresent in signal processing, and the same operations are performed most of the time: product, sum, integration…

Therefore, they deserve a cheat sheet with the most common properties and operations used in signal processing.

## Sine Wave

The sine wave is the basis of all periodic signals and is omnipresent in many fields of signal processing. Therefore, it is important to master its characteristics.