Advanced Satellite Communication Learning Platform

Master orbital mechanics, link budgets, and constellation design with interactive tools and real-time calculations

Satellite Communication Calculators

Orbital Mechanics

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Link Budget

Antenna Design

Doppler Shift

Coverage Area

Propagation Delay

Interactive Simulators

Signal Propagation

12.0 GHz
0 mm/h
45°

Constellation Coverage

6
550 km
53°

3D Orbital Visualizations

Single Orbit Visualization

Coverage Analysis

Real-Time Satellite Tracking Dashboard

Track live satellites using real-time TLE data from space agencies and organizations

Satellite Selection

Ground Station

Live Satellite Positions

Satellite Information

Offline

Select a satellite category and load TLE data to begin tracking

Tracked Satellites

0 satellites loaded

Pass Predictions

No passes calculated

Satellite Communication Theory

Multiple Access Techniques

FDMA - Frequency Division Multiple Access

Allocates distinct frequency bands to different users, allowing simultaneous transmission without interference. Simple to implement but suffers from bandwidth inefficiency.

TDMA - Time Division Multiple Access

Divides transmission time into slots, assigning each user a specific time slot. Offers improved spectral efficiency but requires precise synchronization.

CDMA - Code Division Multiple Access

Utilizes unique spreading codes to distinguish between users sharing the same frequency band. Provides enhanced security and interference resistance.

SDMA - Space Division Multiple Access

Leverages spatial separation through multi-beam antennas, enabling frequency reuse across different geographic regions.

Orbital Mechanics

Kepler's Laws

Fundamental principles governing satellite orbits based on gravitational mechanics.

Orbital Elements

  • Semi-major axis (a): Defines orbit size
  • Eccentricity (e): Describes orbit shape
  • Inclination (i): Angle to equatorial plane
  • RAAN (Ω): Orbit orientation
  • Argument of perigee (ω): Perigee location
  • True anomaly (ν): Satellite position

Perturbations

Various forces cause deviations from ideal orbits including Earth's oblateness, atmospheric drag, and solar radiation pressure.

Payload Technologies

High-Throughput Payloads

Employ frequency reuse through multi-beam architectures, dramatically increasing capacity with hundreds of spot beams.

Software-Defined Payloads

Utilize reconfigurable hardware that adapts to changing traffic patterns throughout the satellite's lifetime.

Digital Channelizers

Replace analog components with digital signal processing, enabling dynamic bandwidth allocation and improved efficiency.

Optical Communication

Leverage laser technology for inter-satellite and ground links, offering data rates exceeding 100 Gbps.