- dB in comparisons
Decibels are often used in comparing radar systems or parts of radar systems.
These problems will give you an understanding of how those comparisons are used.
- Radar A produces 5000 W peak power, while radar B produces 2000 W
peak power. How many dB better is radar A?
- Radar A has radio frequency (RF) component losses of 5.5 dB (A loss is a
negative gain - power is reduced). Radar B has RF losses of 1.5 dB.
Which radar is better in this respect? What percentage of the power in is lost
by radar A? What percentage of the power is lost in radar B?
- Refer to the previous two exercises. Adjust the power of Radar A and Radar B
downward to reflect the losses for each radar. Which is more powerful after
taking into account the losses?
- If you can reduce losses by 1 dB, by how much can you reduce radar power,
yet achieve the same radar performance?