SYSTEM FOR DETERMINING DIFFERENTIAL CORRECTIONS FOR MEASURED COORDINATES OF A MOVING OBJECT Russian patent published in 2007 - IPC G01S5/10 

FIELD: radiolocation, possible use in onboard equipment of satellite navigation systems.

SUBSTANCE: device for determining position consists of onboard equipment, ground-based equipment of control station and satellite relay, mounted on a stationary space satellite. Onboard equipment contains information input panel, OR element, first switch, receipt indicator, near-omnidirectional receiving antenna, second switch, current coordinates indicator, memory block, current coordinates computer, differential correction memory block, information output of differential correction indicator, decoder, OR element, synchronizer, coordinates memory block, computer, AND element, device for forming onboard time scale, consisting of frequency and time standard, third switch and phase shifter, first differentiating circuit, controlling input of coordinates memory block of stationary space satellite, first, second delay elements, second differentiating circuit, delay element. Ground-based equipment of control station contains serially connected near-omnidirectional receiving antenna, first frequency transformer, intermediate frequency amplifier, second frequency transformer, power amplifier, to which a directional transmitting antenna is connected. Satellite relay contains a near-omnidirectional antenna, first frequency transformer, output of which is connected to input of intermediate frequency amplifier, second frequency transformer, power amplifier, transmitting near-omnidirectional antenna.

EFFECT: expanded working zone.

7 dwg