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Which of the following determines the required transmission power in MLS?(a) Noise(b) Bit error rate(c) Runway length(d) Aircraft sizeI got this question in unit test.This intriguing question comes from Microwave Landing System in chapter Landing Systems & Air-Traffic Management of Avionics

Answer» RIGHT answer is (b) BIT error rate

To explain: The acceptable bit error rate of the differential phase SHIFT keying (DPSK) transmissions at the 20-nmi limit determines the transmitter power needed in the ground stations.


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