Search Track Spacing and Coverage
Single-pass probability of detection from corrected sweep width and track spacing (coverage = W/S, POD = 1 - e^-coverage), or the spacing that hits a target POD. The planning number a search segment's resources are set from.
Formula and source
coverage = sweep_width / track_spacing; POD = 1 - e^(-coverage); track_spacing = sweep_width / (-ln(1 - target_POD)).
NSARC / USCG search theory (exponential random-search detection model), by name.
Audience
This tile is built for field and sar and the adjacent professions in the Field, Backcountry, and SAR group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
Related tools
Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.