Which of the following navigational systems is most stealthy?(a) Secondary surveillance radar(b) VOR(c) Celestial navigation(d) SONARI had been asked this question in a national level competition.The above asked question is from Guidance and Navigation in section Introduction & Navigation Equations of Avionics

Which of the following navigational systems is most stealthy?(a) Secon

1.	Which of the following navigational systems is most stealthy?(a) Secondary surveillance radar(b) VOR(c) Celestial navigation(d) SONARI had been asked this question in a national level competition.The above asked question is from Guidance and Navigation in section Introduction & Navigation Equations of Avionics
Answer» The correct choice is (c) Celestial navigation To EXPLAIN: In celestial navigation, the POSITION is COMPUTED by measuring the elevation and azimuth of celestial bodies relative to the navigational coordinate frame at precisely known TIMES. Since it is a completely passive system, it is considered to be stealthy and is used in special purpose high altitude aircraft in conjunction with an INERTIAL navigator.

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