Do you want to know who is the most powerful satellite navigation system: GPS, GLONASS, Galileo or BeiDou? Here we will compare the main four navigation satellite systems in the world. A satellite system with glob all coverage is called the Global Navigation Satellite System. We briefly call it GNSS. The current GNSS includes the Global Positioning System developed by the United States, the Global Navigation Satellite System operated by Russia and the BeiDou Navigation Satellite System launched by China, as well as the European Union's Galileo system. Let's now look at the differences between the four existing GNSS systems. Here, we'll introduce you to their respective characteristics one by one, and then compare them one by one! Hi, everyone. Welcome to Hot Topics Time, a channel to interpret news from a new perspective, and explore the wisdom behind the news. Before we start today's video, please subscribe to our channel, which is the encouragement that we can create more videos. OK, let's continue the topic we are talking about.