The United States had already made a major breakthrough in communications technology in 1969, enabling people to communicate over long distances from the Earth to the Moon. This breakthrough occurred when the Apollo 11 mission successfully landed on the moon in the same year.
At that time, the development of communications technology was still relatively infant, but scientists and engineers in the United States showed amazing innovation and determination to achieve wireless communication with the lunar module.
In order to enable communication with the Moon, NASA spends a lot of time and resources on research and development of new technologies. At that time, they built a system known as the "communication network between the moon and the earth", which achieved communication through the mutual cooperation between satellites and ground stations.
Specifically, they used a technology called "Lunar Relay Satellite" to enhance communications when landing on the moon. These satellites can receive signals transmitted from a ground station and broadcast them again to another ground station on Earth, enabling two-way communication between the Earth and the lunar module.
The success of this technology is due to the intensive study of signal transmission by American scientists. To overcome the enormous distance between the Moon and the Earth, they invented a new communication protocol called the Deep Space Network Protocol. This protocol can ensure the stability and transmission efficiency of the signal, so that the communication signal can be transmitted normally within a distance of 380,000 kilometers.
One of the major breakthroughs in communication technology at that time was the realization of real-time communication. In past lunar missions, there have been delays in the delivery of information, and sometimes it has taken a few minutes or even longer to receive a response from Earth. When the Apollo 11 mission landed on the moon in 1969, new communication technology enabled near-real-time communication, meaning astronauts and ground personnel could communicate and process missions more quickly.
In addition, in order to ensure the security and reliability of communications, American scientists have introduced a set of encryption and error correction mechanisms. These mechanisms protect the integrity and confidentiality of communication data and avoid the possibility of signal interference or interception.
In general, the United States made a huge breakthrough in communication technology in 1969, successfully enabling long-distance communication between the Earth and the Moon. This achievement not only attracted global attention and amazement at the time, but also laid the foundation for later space exploration, promoting the further development and innovation of communication technology.