Gps Repeater For Indoor Positioning

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.

Gps repeater for indoor positioning.

The signal moved indoors. 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. Each repeater retransmits the gps signals continuously to the indoor receivers without sequential switching. Block diagrams of an analog digital repeater and a central processor are presented and parameters and performances are discussed.

A coaxial cable is then used to feed the signal into the building to a relatively small and compact repeater unit. 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. Assume more than one satellite is visible to four or more repeaters. 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.

In this paper the authors focus on the differences between global positioning system gps and repeating gps rgps. Depending on the size of the building a number of repeaters will be installed such as at 10 15 meter intervals. In this paper a gps repeater based indoor positioning approach is proposed. If the use of gnss repeater is allowed for certain indoor environments under rf radiation regulations switching and or delaying gnss signals enables indoor positioning without any new pn code and signal generator as with pseudolites.

They propose a method which involves the partial fitting of gps into a rgps system. Gps or gnss repeaters consist of three components.