Gps Repeater For Indoor Positioning

In this paper a gps repeater based indoor positioning approach is proposed.

Gps repeater for indoor positioning.

In this paper the authors focus on the differences between global positioning system gps and repeating gps rgps. A gps repeater system sometimes referred to as a gps re radiator is used to bring satellite signals indoors providing positioning and timing signals inside areas where not usually present. Block diagrams of an analog digital repeater and a central processor are presented and parameters and performances are discussed. Depending on the size of the building a number of repeaters will be installed such as at 10 15 meter intervals.

Our customers use indoor gps coverage solutions in a wide range of applications from commercial electronics test and repair facilities to emergency vehicles being kept on the grid when inside fire police or ambulance stations. The signal moved indoors. They propose a method which involves the partial fitting of gps into a rgps system. The antenna located in the repeater unit can typically cover a radius of up to 20 metres but multiple repeaters can be used to provide coverage over a larger area.

Gps or gnss repeaters consist of three components. An active outdoor gps antenna typically mounted on the roof of a building to pick up signals a repeater unit with a built in passive antenna used to re transmit the gps signal indoors and a coaxial cable that connects the two. Unlike most repeater based indoor positioning techniques in current literature repeaters are not required to connect to an outdoor antenna with fixed length cables. Assume more than one satellite is visible to four or more repeaters.

Neither do repeaters need to be synchronized. The gps signal is then reproduced inside the building.