Q&A ยท 11:01:50-11:02:34

Can a ship be tracked through its own radar emissions?

Detecting a transmitting radar is straightforward in principle; timely and accurate location is a further problem.

Question

Could American forces track a ship through that ship's own radar emissions?

Short answer

Yes, using a receiver tuned to the signal and directional bearings, though speed and accuracy are harder to achieve.

Notes

An active radar gives an opponent a signal that can be detected with a suitably tuned directional receiver. A bearing plot can then help locate its source. The principle is straightforward, while obtaining an accurate position quickly is more difficult. The technology is treated as a longer-term threat, with the qualification that the Japanese did not have it at the particular battle being discussed.