Statistics of Radial Ship Extent as Seen by a Seeker.

摘要

We present a geometrical study of a missile seeker illuminating a ship target. Modern seekers employ various methods to recognise their target amid background vessels and electronic countermeasures such as chaff and active decoys. We focus on one such possible method: the seeker's measurement of a ship's down-range extent. We aim to find a representative value for this extent given that the seeker can approach the ship, centre on, from any direction. This representative value can then be used in studies of electronic attack in the generation and presenting to the seeker of a realistic false ship target. Ensuring the false target has a statistically favourable range extent might make it appear more realistic to the seeker. On the other hand, a lack of any statistically dominant range extent implies that we needn't select any particular value to present to the seeker. Either way, this report's analysis gives guidance in what range extent to specify when constructing a false target. The simple scenarios we consider turn out to present no statistically dominant range extents. Extrapolating from these, we conclude that it's probably not necessary to focus strongly on any one range extent when constructing a false target.