The satellite Doppler positioning technique was pioneered in the early space age, using the Doppler frequency shift of satellite signals to determine receiver positions. This concept was first utilized by the U.S. Navy to develop the Transit navigation system.
To further enhance the benefits of combining space-based geodetic techniques, the European Space Agency (ESA) has established the Genesis mission.
GPS applications are vulnerable to signal interference, spoofing and degraded or denied services. Both intentional — jamming — and unintentional signal interference can cause inaccurate PNT and poor navigation performance.
Read Richard Langley’s introduction to this article: “Innovation Insights: What is a CubeSat?” Bobcat-1 was a three-unit CubeSat […]
This is an introduction to the February 2024 Innovation article, “GNSS Timing Measurements from a Low-Earth Orbiting Satellite.” […]
In this quarter’s “Innovation” column, we have an article by some members of the team who built and operate the GNSS-R system on the top of Haleakalā. They explain how the system works and some of the preliminary observations and results they have obtained. More science in paradise!
In this quarter’s “Innovation” column, members of the team who built and operate a GNSS-R system on the top of Haleakalā explain how the system works and some of the preliminary observations and results they have obtained.
Read Richard Langley’s introduction to this article: “Innovation Insights: Falcon Gold analysis redux” As part of NASA’s increased […]
Follow Us