Patent ID: 6822608
Filing Date: 2004-11-23
Classification: G01S

Abstract:
A method for the localization of a target on a target trajectory, and transmitting a variable frequency signal, the method comprising:acquiring the variable frequency signal by a detection means on a moving platform on a following trajectory, the target trajectory and the following trajectory separated by a non-zero angle, said step of acquiring including at least two independent sequences, each sequence configured to obtain a series of measurements; and measurement processing, including statistical processing carried out on each of the at least two measurement series, the statistical processing configured to determine a predetermined set of target parameters, wherein one of the least two sequences corresponds to a trajectory perpendicular to a direction of arrival of the variable frequency signal from the target, said predetermined set of target parameters includes a target speed parameter and a distance parameter said target speed parameter and said distance parameter determined by solving a system of independent equations determined from a series of measurements, a first phase of the statistical processing produces a system of linear equations, and unknowns of the linear equation are 1d&it;â€ƒ&it;and&it;â€ƒ&it;v&varphi;d,â€ƒd being the distance from the target to the moving platform and &ngr;&PHgr; the component of the target speed which can be estimated.