An ubiquitous positioning system based on IEEE 802.15.4 radio signals

2013 ◽  
Author(s):  
Alberto Rolando ◽  
Emanuele Amoruso
Keyword(s):  
Ieee 802.15.4 ◽  
Positioning System ◽  
Radio Signals

Ultra Short Baseline (USBL) Calibration for Positioning of Underwater Objects

2019 ◽  
Vol 2 (2) ◽  
pp. 73-85
Author(s):  
Bagus Septyanto ◽  
Dian Nurdiana ◽  
Sitti Ahmiatri Saptari
Keyword(s):  
Acoustic Wave ◽  
Scale Factor ◽  
Positioning System ◽  
Radio Waves ◽  
Short Baseline ◽  
Error Angle ◽  
Satellite Navigation System ◽  
The Earth ◽  
Underwater Positioning ◽  
Radio Signals

In general, surface positioning using a global satellite navigation system (GNSS). Many satellites transmit radio signals to the surface of the earth and it was detected by receiver sensors into a function of position and time. Radio waves really bad when spreading in water. So, the underwater positioning uses acoustic wave. One type of underwater positioning is USBL. USBL is a positioning system based on measuring the distance and angle. Based on distance and angle, the position of the target in cartesian coordinates can be calculated. In practice, the effect of ship movement is one of the factors that determine the accuracy of the USBL system. Ship movements like a pitch, roll, and orientation that are not defined by the receiver could changes the position of the target in X, Y and Z coordinates. USBL calibration is performed to detect an error angle. USBL calibration is done by two methods. In USBL calibration Single Position obtained orientation correction value is 1.13 ̊ and a scale factor is 0.99025. For USBL Quadrant calibration, pitch correction values is -1.05, Roll -0.02 ̊, Orientation 6.82 ̊ and scale factor 0.9934 are obtained. The quadrant calibration results deccrease the level of error position to 0.276 - 0.289m at a depth of 89m and 0.432m - 0.644m at a depth of 76m

Design of an adaptive positioning system based on WiFi radio signals

2009 ◽  
Vol 32 (7-10) ◽  
pp. 1245-1254 ◽  
Author(s):  
Yih-Shyh Chiou ◽  
Chin-Liang Wang ◽  
Sheng-Cheng Yeh ◽  
Ming-Yang Su
Keyword(s):  
Positioning System ◽  
Radio Signals

scholarly journals Study of a Multi-Fusion Positioning System Based on Beidou Indoor Inertial Navigation

2021 ◽  
Vol 2083 (2) ◽  
pp. 022004
Author(s):  
Peiguang Wang ◽  
Sheng Ma ◽  
Haitao Nie ◽  
Zhibin Zang ◽  
Jianwei Zhao ◽  
...  
Keyword(s):  
Data Fusion ◽  
System Design ◽  
Inertial Navigation ◽  
Soft Core ◽  
Positioning System ◽  
Dimensional Error ◽  
Radio Signals ◽  
User Capacity

Abstract This article proposes an indoor combined positioning terminal based on Beidou pseudofiles and micro-inertial navigation sensors. Through the built-in Beidou pseudo lite positioning IP soft core, it can receive and analyse Beidou satellite signals. The article creates BDS ground inertial positioning data receiving hardware; performs inertial positioning data primary information identification authentication on the inertial data received by the hardware; performs multi-inertial data fusion estimation calculation on inertial positioning data after authentication, reduces the dimensional error value, and completes the proposed system Design. The program makes full use of the data resources of the existing airborne equipment, does not need to transmit radio signals, and the user capacity is not limited, which is suitable for highly dynamic users. Through simulation and sports car test, it is proved that the scheme is feasible.

scholarly journals Distributed Multi-Antenna Positioning for Automatic-Guided Vehicle

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1155
Author(s):  
Xinyuan An ◽  
Sihao Zhao ◽  
Xiaowei Cui ◽  
Qin Shi ◽  
Mingquan Lu
Keyword(s):  
Initial Guess ◽  
Positioning System ◽  
Position Information ◽  
Positioning Systems ◽  
Automatic Guided Vehicles ◽  
Single Antenna ◽  
Marquardt Algorithm ◽  
Radio Signals ◽  
Localization Performance ◽  
Yaw Angle

Radio-based positioning systems are typically utilized to provide high-precision position information for automatic-guided vehicles (AGVs). However, the presence of obstacles in harsh environments, as well as carried cargoes on the AGV, will degrade the localization performance, since they block the propagation of radio signals. In this paper, a distributed multi-antenna positioning system is proposed, where multiple synchronous antennas are equipped on corners of an AGV to improve the availability and accuracy of positioning. An estimator based on the Levenberg–Marquardt algorithm is introduced to solve the nonlinear pseudo-range equations. To obtain the global optimal solutions, we propose a coarse estimator that utilizes the displacement knowledge of the antennas to provide a rough initial guess. Simulation results show a better availability of our system compared with the single antenna positioning system. Decimeter accuracy can be obtained under a Gaussian measurement noise with a standard deviation of 0.2 m. The results also demonstrate that the proposed algorithm can achieve positioning accuracy close to the theoretical Cramer–Rao lower bound. Furthermore, given prior information of the yaw angle, the same level of accuracy can be obtained by the proposed algorithm without the coarse estimation step.

scholarly journals Localisation of Inspection Probes in A Storage Tank

2021 ◽  
Vol 1 (2) ◽  
pp. 101-112
Author(s):  
Nurmi Elisya Rosli ◽  
Ali Sophian ◽  
Arselan Ashraf
Keyword(s):  
Storage Tank ◽  
Ieee 802.15.4 ◽  
Indoor Localization ◽  
Signal Strength ◽  
Positioning System ◽  
Wireless Technology ◽  
Received Signal Strength Indicator ◽  
Application System ◽  
Wireless Communication Protocols ◽  
Indoor Positioning System

Indoor Positioning System (IPS) has been widely used in today’s industry for the various purposes of locating people or objects such as inspection, navigation, and security. Many research works have been done to develop the system by using wireless technology such as Bluetooth and Wi-Fi. The techniques that can give some better performances in terms of accuracy have been investigated and developed. In this paper, ZigBee IEEE 802.15.4 wireless communication protocols are used to implement an indoor localization application system. The research is focusing more on analyzing the behaviour of Received Signal Strength Indicator (RSSI) reading under several conditions and locations by applying the Trilateration algorithm for localizing. The conditions are increasing the number of transmitters, experimented in the non-wireless connection room and wireless connection room by comparing the variation of RSSI values. Analysis of the result shows that the accuracy of the system was improved as the number of transmitters was increased.

scholarly journals Analysis of service quality indicators in a local positioning system based on ZigBee technology

2020 ◽  
pp. 1-9
Author(s):  
Elena Viktorovna Kokoreva ◽  
Ksenia Igorevna Shurygina
Keyword(s):  
Quality Of Service ◽  
Network Architecture ◽  
Traffic Management ◽  
Ieee 802.15.4 ◽  
Load Factor ◽  
Positioning System ◽  
Local Positioning System ◽  
Computational Simplicity ◽  
Ieee 802.15.4 Standard

One of the topical areas of the digital economy is the development of services based on the use of systems for local positioning of objects. The article presents the results of analytical modeling of a positioning system built on the equipment of the IEEE 802.15.4 standard. The purpose of this study is to evaluate the efficiency of data transmission in a ZigBee network. As a modeling tool, the mathematical apparatus of queuing networks (CeMO) was selected, which has proven its effectiveness for calculating the characteristics of various infocommunication systems. The method of analysis of average values was chosen by the authors to assess the quality of service indicators due to its computational simplicity and the adequacy of the results obtained. The authors have developed a structural diagram of the investigated positioning system. On the basis of the network architecture, a conceptual, algorithmic and software model in the form of a closed homogeneous queuing network has been developed and its characteristics have been calculated. The parameters obtained as a result of modeling make it possible to evaluate and analyze the quality of service indicators in the telecommunications segment of the local positioning system under study, such as latency, performance, network load factor and the probability of losses, which can be used for efficient traffic management in the telecommunications segment of the geolocation system based on IEEE 802.15.4 standard.

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