TAG: satellite constellation

FIGURE 1. An artist’s view of the QZSS satellites. The upper-most satellite is the geostationary QZS-3 spacecraft with the additional S-band dish antenna whereas the other satellites pictured are the inclined geosynchronous satellites. (Image: Mitsubishi Electric)

Innovation: QZS-3 and QZS-4 join the Quasi-Zenith Satellite System

February 9, 2018

Headshot: Yang-BeiDou

Directions 2018: BeiDou builds, diversifies, expands

December 11, 2017

Headshot: Paul Verhoef

Directions 2018: Galileo ascendant

December 8, 2017

FIGURE 3. Circular reflector array on a GLONASS-K1 satellite, surrounding navigation signal inner antenna elements. Photo from Reshetnev Information Satellite Systems.

Innovation: GLONASS — past, present and future

November 1, 2017

Photo: Iridium

Iridium launches alternative GPS PNT service

May 23, 2016

Image: GPS World

Happy 20th Anniversary, GPS!

April 24, 2015

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