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Very High Frequency Omnidirectional Range begins with transmission of frequency modulated signal.(a) True(b) FalseThis question was posed to me during an interview for a job.My doubt is from Next Generation Wireless Network in chapter Next Generation Wireless Network of Cognitive Radio

Answer»

Correct answer is (b) False

Explanation: Very High Frequency Omnidirectional Range begins with transmission of amplitude modulated signal with a CONSTANT frequency. The transmitted signal passes through a SET of antenna in a circle introducing frequency modulated Doppler onto the received signal. The RELATIVE phase angle between amplitude modulated signal and frequency modulated signal is employed to find the location of the SOURCE.



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