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Indoor navigation positioning system based on ultra wide band

An indoor navigation and positioning system technology, applied in the field of positioning systems, can solve the problems of difficult pulse shaping and weak indoor multipath resistance, and achieve the effect of strong multipath resistance and high positioning accuracy

Inactive Publication Date: 2013-09-04
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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Problems solved by technology

The above-mentioned systems all adopt the pulse modulation method, the pulse shaping is difficult, and the ability to resist indoor multipath is weak, and there are certain limitations in practical application

Method used

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  • Indoor navigation positioning system based on ultra wide band
  • Indoor navigation positioning system based on ultra wide band
  • Indoor navigation positioning system based on ultra wide band

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034]The ultra-wideband indoor navigation and positioning system based on the present invention includes a mobile receiver and more than three transmitters, each transmitter is used as a base station and has a fixed transmitting end, the mobile receiver includes a mobile receiving end and a system control module, three The above fixed transmitters transmit ultra-wideband signals (i.e. navigation signals) through their respective transmitting antennas, the receiving antenna of the mobile receiving end captures and tracks the ultra-wideband signals, and the system control module performs correlation ...

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Abstract

The invention discloses an indoor navigation positioning system based on an ultra wide band. At a fixed transmitting end, a transmitter adopts a PRN (Pseudo-Random Noise) sequence to generate an input signal, after input signal source coding and channel coding, a baseband modulation signal is generated through inverse Fast fourier transform, Zero Padding is added to the baseband modulation signal, the baseband modulation signal is subjected to digital to analog conversion to form a baseband analog signal, the baseband analog signal modulates a carrier with the central frequency of 3.432GHz to form an ultra wide band signal, and the ultra wide band signal is transmitted through a transmitting antenna of the transmitter; and at a mobile receiving end, a receiving antenna of a mobile receiver receives the ultra wide band signal, after passing a band-pass filter and a low-noise amplifier, the ultra wide band signal is subjected to down-conversion and analog to digital conversion to obtain a baseband digital signal, the baseband digital signal is subjected to synchronization and channel equalization, and finally primary information of the transmitting end is obtained through reverse processing programs of the fixed transmitting end.

Description

technical field [0001] The invention relates to a positioning system, in particular to an indoor navigation positioning system based on ultra-wideband. Background technique [0002] Ultra Wideband (UWB-Ultra Wideband) technology is a radio technology developed in recent years. Because of its unique performance, it can provide ranging information accurate to less than 1 ns, and is very suitable for the application of indoor positioning systems. UWB-based navigation and positioning technology is an electronic information integration and processing technology that integrates communication, navigation and positioning. [0003] The research on indoor positioning systems has a history of nearly 30 years. To sum up, the technologies that indoor positioning systems rely on mainly include ultrasonic and infrared rays. Ultra Wide Band (UWB) technology is characterized by its high transmission rate, low transmit signal power, low signal power spectral density, and strong anti-multipat...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04B7/26
Inventor 徐劲松杨良勇丁冬平孙琴
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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