Table of Contents
Satellite constellations are groups of satellites working together to provide global coverage for communication, navigation, and Earth observation. Planning these constellations requires understanding orbital mechanics to ensure optimal coverage and efficiency.
Basics of Orbital Mechanics
Orbital mechanics involves the study of satellite motion under the influence of gravity. Key parameters include altitude, inclination, and orbital period. These factors determine the satellite’s coverage area and revisit time.
Designing Satellite Constellations
Designing a satellite constellation involves selecting the number of satellites, their orbital planes, and spacing. The goal is to achieve continuous coverage with minimal gaps and overlaps. Equatorial and polar orbits are common choices depending on coverage needs.
Planning for Global Coverage
Global coverage requires satellites to be distributed across multiple orbits and inclinations. Constellations like Walker or polar configurations are used to ensure that all regions on Earth are covered at all times.
- Determine coverage requirements
- Select appropriate orbital parameters
- Optimize satellite distribution
- Account for orbital decay and station-keeping