Solar geolocation has been used for centuries by mariners. Day length varies with latitude while time of solar noon varies with longitude. By measuring the two, one is able to determine the general position on the globe. Miniature geolocators take advantage of this by recording and storing light-level data and time of day at regular intervals. Mounted on a migratory bird, they have the ability to track their annual travels across the globe.
Solar geolocation has been used for centuries by mariners. Day length varies with latitude while time of solar noon varies with longitude. By measuring the two, one is able to determine the general position on the globe. Miniature geolocators take advantage of this by recording and storing light-level data and time of day at regular intervals. Mounted on a migratory bird, they have the ability to track their annual travels across the globe.
