Satellite Navigation is a highly advanced technology-based positioning system that uses radio transmissions from satellites to determine a user's location or guide a moving object towards a specific destination. It involves an array of orbiting satellites that send precise microwave signals, enabling GPS receivers to calculate and display accurate location, speed, and time information to users around the globe. With sophisticated onboard equipment, this system can deliver real-time positioning and timing data with remarkable accuracy. This technology, broadly used in areas like aviation, maritime, and land transportation, plays a vital role in navigation, precise mapping, and timing applications.

-board digital equipment. 1. Global Positioning System (GPS): The most renowned example of satellite navigation is the American-owned GPS. It starts transmitting radio signals which are received by digital equipment like smartphones, GPS devices in cars, and specific trackers. 2. GLONASS: GLONASS is Russia's equivalent to the GPS, providing real-time position and velocity determination. People who lose their path in the wilderness or remote areas are found using this network, as it consistently broadcasts radio signals back to Earth. 3. Galileo: This is Europe’s global navigation satellite system, providing a highly accurate global positioning service. It has been used for accurate mapping, and in automated cars and drones for navigation and control. 4. BeiDou: It is a satellite navigation system developed by the Chinese government. It's often used for civilian purposes like navigation for vehicles and ships, precise time-keeping, and disaster relief efforts. 5. IRNSS: Stands for Indian Regional Navigation Satellite System, it's an Indian-based satellite navigation system. IRNSS functions like GPS, but it covers only India and the region around it. It's used for accurate mapping, terrestrial, aerial and marine navigation.

-board digital computing to determine a geographical location. Fun Fact: Did you know that Satellite Navigation, or SatNav, involves a lot more space technology than you may think? In fact, for a SatNav to work, it requires a network of at least 24 operational satellites, which are located around 20,200 kilometers above the Earth. These satellites are placed in six Earth-centered orbital planes, with four of them in each plane. Each satellite circles the Earth twice a day and emits a unique signal. When a SatNav device picks up signals from at least four of these satellites, it uses a process called trilateration to calculate the user's exact location based on the time delay between when the signal was transmitted and received. Quite a complex and sophisticated process for our everyday location finding, isn't it?