GNSS    Global Navigation Satellite System

IGS        International GNSS Service

SLAM    Simultaneous Localization and Mapping

CNN      Convolutional Neural Networks

RNN      Recurrent Neural Networks

LSTM    Long Short-Term Memory

CTR      Click-Through-Rate

CSV       Comma Separate Values

API       Application Programming Interface

APU    Accelerated Processing Unit (combines the CPU and GPU onto a single chip)

GPU    Graphics Processing Unit (the processor that generates the video and graphics content that appear on your screen)

CPU     Central Processing Unit (often be referred to as the brains of the computer)