Doppler Log – Principle, Working, Speed and Errors

Doppler log is an instrument, used in ships, to measure ship’s relative speed with water (in which it is travelling) by the use of Doppler effects on transmitted/reflected sound waves. Principle Doppler log is based on the principle of Doppler shift in frequency¬†measurement i.e. apparent change in frequency received when the distance between source and … Continue reading Doppler Log – Principle, Working, Speed and Errors