Real time locating method for supporting TDOA (Time Difference Of Arrival), TOA (Time Of Arrival) and RSSI (Receive Strength Signal Indicator) modes

A real-time positioning and mode technology, applied in sustainable buildings, energy-saving ICT, climate sustainability, etc., can solve the problems of inapplicability, low positioning accuracy, and the failure of large-scale application of GPS systems, and achieve low power consumption. Effect

Inactive Publication Date: 2011-06-01
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

However, due to technical defects, these existing technologies cannot be applied to many occasions that require precise positioning. The GPS system that began in the late 1970s is difficult to apply to indoor places such as factories, warehouses, and buildings because it needs to receive satellite signals. Due to the cost of realizing precise positioning, the GP

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  • Real time locating method for supporting TDOA (Time Difference Of Arrival), TOA (Time Of Arrival) and RSSI (Receive Strength Signal Indicator) modes
  • Real time locating method for supporting TDOA (Time Difference Of Arrival), TOA (Time Of Arrival) and RSSI (Receive Strength Signal Indicator) modes
  • Real time locating method for supporting TDOA (Time Difference Of Arrival), TOA (Time Of Arrival) and RSSI (Receive Strength Signal Indicator) modes

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Embodiment Construction

[0025] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0026] The real-time positioning with three positioning modes of TOA, TDOA and RSSI based on the 24730 protocol of the present invention utilizes advanced electronic communication technology, computer and network technology, and provides a system solution for target positioning and tracking for modern logistics. The present invention is based on the ISO24730 protocol standard, and three positioning modes of TOA, TDOA and RSSI are designed in order to meet the positioning requirements in the complex modern logistics process.

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below through specific implementation examples and with reference to the accompanying drawings.

[0028] figure...

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Abstract

The invention discloses a real time locating method for supporting TDOA (Time Difference Of Arrival), TOA (Time Of Arrival) and RSSI (Receive Strength Signal Indicator) modes. The method comprises the following steps of: (1) providing a locating label and a locating access point utilizing a microwave frequency range; (2) realizing real time locating and tracking of a target through real time locating embedded software and a signal processing algorithm; and (3) completing virtual door control, linear and planar locating algorithms and locating simulation software. In order to meet complex locating requirements on physical distribution processes, the invention realizes the real time locating method for supporting three main locating modes of the TDOA, the TOA and the RSSI and has the advantages of low power consumption, and suitability for door control, linear and planar locating application.

Description

technical field [0001] The invention relates to a real-time positioning method, in particular to a real-time positioning method supporting three modes of TDOA, TOA and RSSI. Background technique [0002] Real Time Location System (RTLS) refers to a system that locates and tracks targets in real time in a designated space (office building, site, urban area) through software and wireless communication technology. With the rapid development of science and technology, people pay more and more attention to positioning services, such as the Global Positioning System (GPS) and active RFID based on area queries, which have been widely used in many fields. However, due to technical defects, these existing technologies cannot be applied to many occasions that require precise positioning. The GPS system that began in the late 1970s is difficult to apply to indoor places such as factories, warehouses, and buildings because it needs to receive satellite signals. Due to the cost of reali...

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Application Information

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IPC IPC(8): H04W4/02H04W64/00
CPCY02B60/50Y02D30/70
Inventor 孙伟董丽华周昌董耀华张巍
Owner SHANGHAI MARITIME UNIVERSITY
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