Patent ID: 8594972

Claim:
A system for measuring a parameter of a medium with a vehicle moving in a traveling direction through the medium, said system comprising: a first detecting portion which detects a first value of the parameter from a first line-of-sight in a first direction at a first position of the vehicle at a first time; a second detecting portion which detects a second value of the parameter from a second line-of-sight in a second direction at a second position of the vehicle at a second time; a third detecting portion which detects a third value of the parameter from a third line-of-sight in a third direction at a third position of the vehicle at a third time; a fourth detecting portion which detects a fourth value of the parameter from a fourth line-of-sight in a fourth direction at a fourth position of the vehicle at a fourth time; and a calculating portion which calculates the parameter based on the first value, the second value, the third value and the fourth value, wherein the first line-of-sight and the third line-of-sight are in a first plane and intersect at a first intersection, the second line-of-sight and the fourth line-of-sight are in a second plane and intersect at a second intersection, and the calculating portion calculates the parameter based additionally on the first intersection and the second intersection.