Question

What is the parameter which differentiates LORAN – B from LORAN – A?

(a) Method of extraction of timing

(b) Number of receivers

(c) Number of transmitters

(d) Determination of station location

This question was addressed to me during an interview.

I'm obligated to ask this question of Next Generation Wireless Network in chapter Next Generation Wireless Network of Cognitive Radio

Answer 1

The correct choice is (a) Method of extraction of timing

For explanation: LORAN – B employed phase comparison variation and hence used a different method of timing extraction compared to LORAN A. The disadvantage of LORAN B is that its pulse length was about 40 microseconds and the technique exhibited phase distortion.