Space News Mission Log — Satellite Launches, Orbital Events & Analysis
Daily space news, satellite launch reports, orbital debris analysis and weekly roundups — grounded in live tracking data from our network monitoring 26 published reports.
GPS IIR-11: The Backbone of Global Navigation
GPS IIR-11, also known by its NORAD ID 26407, is a part of the Global Positioning System (GPS), a network of satellites providing geolocation and time information to a GPS receiver anywhere on or near the Earth. Launched on 31 March 2003, GPS IIR-11 is one of the 31 operational satellites in the GPS
GPS vs Galileo vs GLONASS vs BeiDou: Comparing Global Navigation Systems
GPS, Galileo, GLONASS, and BeiDou are global navigation satellite systems offering varying coverage, accuracy, and features.
Space Force Expands GPS Network Amid Satellite Close Approaches
The U.S. Space Force has contracted Lockheed Martin for two additional GPS satellites, while several close approaches in orbit are monitored.
Medium Earth Orbit: Understanding Its Role in Satellite Operations
Medium Earth Orbit (MEO) is a region of space where satellites orbit at altitudes between 2,000 and 35,786 km, crucial for navigation and communications.
Understanding TLE Format: A Comprehensive Guide
Two-Line Element sets (TLEs) are crucial for tracking satellites, providing data on orbit parameters and predictions.
Understanding the BeiDou Satellite System: A Comprehensive Guide
The BeiDou Navigation Satellite System, China's global GNSS, offers positioning, navigation, and timing services worldwide.
Understanding GDOP and PDOP in GNSS: A Detailed Guide
GDOP and PDOP are key metrics in GNSS, affecting positioning accuracy. Learn their roles and significance in satellite navigation.
Understanding Satellite Doppler Shift in Orbital Tracking
Satellite Doppler shift affects frequency changes in signals from moving satellites, crucial for accurate tracking and communication.
Orbital Period: Meaning, Formula and Satellite Examples
Orbital period measures how long one orbit takes. Discover why higher satellites orbit more slowly, how to calculate a period and why an orbit is not the same as a visible pass.
Military Satellites: Understanding Their Role and Impact
Military satellites are crucial for defence, providing communication, surveillance, and navigation capabilities. Learn how they function and their strategic importance.
Understanding Satellite Frequency Bands: A Comprehensive Guide
Satellite frequency bands are specific ranges of radio frequencies used for communication between satellites and Earth. Learn about their significance and applications.
BeiDou-3: how China's global navigation system works
China's BeiDou-3 combines navigation satellites in three types of orbit to deliver global positioning and timing, with additional communications and precision services.