Question

How does mode S system differ from mode A and C?

(a) Extension of secondary radar

(b) Uses pulse technology

(c) More data can be transferred

(d) One way travel of radio signal

This question was posed to me in quiz.

The query is from Modes S System topic in portion Surveillance Systems, Mapping and Multimode Radars of Avionics

Answer 1

The Mode S system is an advanced radar system that provides more sophisticated communication and data exchange capabilities compared to Mode A and Mode C. Unlike Mode A and C, which provide only basic identification and altitude reporting, Mode S allows for more detailed information transfer and has the ability to handle multiple data exchanges with improved security and reliability.

Key difference:

Mode S supports two-way communication, enabling more data to be transferred, such as aircraft identification, position, and other operational data.

Final Answer:

(c) More data can be transferred.