Which one of the following countries has its own Satellite Navigation System?
AAustralia
BCanada
CIsrael
DJapan
Answer & Solution
Correct answer: D. Japan
Answer: D. JAPAN has its own satellite navigation system.
Japan operates the QUASI-ZENITH SATELLITE SYSTEM (QZSS, marketed as 'Michibiki'). QZSS provides positioning services covering Japan and the wider Asia-Oceania region with enhanced GPS accuracy. The system currently uses 4 satellites in quasi-zenith orbits with plans to expand to 7. It complements US GPS and is critical for high-precision applications in Japan's mountainous and urban canyons.
Other major satellite navigation systems globally:
- GPS (US)
- GLONASS (Russia)
- Galileo (EU)
- BeiDou (China)
- NavIC/IRNSS (India, regional system)
Distractors:
(A) Australia uses GPS and SBAS augmentation, no native nav system.
(B) Canada uses GPS, no own system.
(C) Israel uses GPS, no own navigation constellation.
Source: Japan Aerospace Exploration Agency (JAXA) / QZSS official website.
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