초록 ▼

The invention relates to a system for tracking and/or guidance of a vehicle or projectile using a correlation arrangement for comparing representations from a sensor mounted on the vehicle or projectile with a reference representation, the correlation being carried out by comparing portions of the r

The invention relates to a system for tracking and/or guidance of a vehicle or projectile using a correlation arrangement for comparing representations from a sensor mounted on the vehicle or projectile with a reference representation, the correlation being carried out by comparing portions of the representations and like portions of the reference representation to derive position coordinates for each of said portions and to evaluate from said position coordinates compensation signals for rotational misalignment and/or changes of scale as between the reference and subsequent representations.

대표청구항 ▼

A tracking and/or guidance system for a vehicle, the system comprising a sensor providing electrical signals forming representations of a field of view of a region towards which the vehicle is travelling, a reference picture selector deriving, a plurality of portions from the said electrical signals

A tracking and/or guidance system for a vehicle, the system comprising a sensor providing electrical signals forming representations of a field of view of a region towards which the vehicle is travelling, a reference picture selector deriving, a plurality of portions from the said electrical signals, the portions forming reference representations of respective portions of a preselected area of the said field view, a correlator circuit correlating each reference representation with a further representation, subsequently provided by the sensor, in each of a plurality of different positions relative to the further representation, means ascertaining the respective positions of best fit of the reference representations with corresponding portions of the further representation, and means utilising the ascertained positions to rotate and/or change the scale of the reference representations to compensate for rotational misalignment and/or changes of scale between the representation from which the reference representations were derived and the further representation.