space medium MCQ

Cross-link inter-satellite links in navigation constellations enable autonomous orbit determination without ground stations.

  1. True - used in GPS III/BeiDou
  2. False - requires constant ground contact
  3. True - only for LEO satellites
  4. False - technologically unfeasible

Answer: True - used in GPS III/BeiDou

Ka-band cross-links allow satellites to range each other, improving ephemeris accuracy and reducing ground segment dependency; implemented in modern GNSS.

Topic Space Technology - Communication
Exam Relevance SSC CHSL, Railway JE
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