In theory, only three geosynchronous orbit communication satellites are required to cover areas excluding the North and South Poles, which amounts to 80% of the Earth's surface area.
Actually, no one goes to the South or North Pole to fight a war.
To enhance surveillance, a separate signal receiving device was installed on the third-generation geosynchronous communication satellite to measure the approximate direction of intercepted radio signals. The key is that the Empire's Air Force has always adopted a strategy of close deployment, which means deploying its own communication satellite near the geosynchronous orbit communication satellites of the Newland Republic and the Tiaoman Empire, and the deployment distance is getting closer and closer.
By now, the interval distance is less than 100 kilometers!
For satellites flying at speeds of tens of thousands of kilometers per hour, this is an approachable distance.
