Методи визначення відстані між об’єктами засобами сенсорних мереж
To date, «wireless sensory networks» («Sensor Networks», hereinafter referred to as sensory networks) attract more and more attention all over the world. The concept of «Sensor Network» appeared relatively recently (several years ago), but to date there is already a completely constant term (Sensor...
Збережено в:
| Дата: | 2018 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | Ukrainian |
| Опубліковано: |
Kamianets-Podilskyi National Ivan Ohiienko University
2018
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| Онлайн доступ: | http://mcm-tech.kpnu.edu.ua/article/view/140018 |
| Теги: |
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| Назва журналу: | Mathematical and computer modelling. Series: Technical sciences |
Репозитарії
Mathematical and computer modelling. Series: Technical sciences| Резюме: | To date, «wireless sensory networks» («Sensor Networks», hereinafter referred to as sensory networks) attract more and more attention all over the world. The concept of «Sensor Network» appeared relatively recently (several years ago), but to date there is already a completely constant term (Sensor Network), which means distributed, self-organizing, resistant to the failure of individual elements of the network consisting of a large number small and cheap semiconductor devices that exchange information over a wireless communication channel, are not serviced and do not require a special installation. Each device can contain various sensors of physical parameters of the medium (motion, light, temperature, humidity, pressure, etc.), as well as means for the primary processing and storage of the received data. The number of objects in such a network is theoretically determined only by the scope and budget, and due to the low price of individual devices (about a few dollars and below) can be very large (about a few thousand and above). Different methods try to estimate the distance between two nodes using time, measurements of the time of signal propagation from the transmitter to the receiver so that on its basis it was possible to calculate the distance between the transmitter and the receiver. In the article a comparative analysis of methods and algorithms of localization using the following components of localization systems: distance / angle estimation, position calculations and localization algorithm are carried out. Choosing a method for estimating the distance between nodes in a localization system is an important factor that affects the system's performance. Usually, to estimate the exact location of the site, you must use at least three distance estimates. It is determined that for sensory networks, the most important thing is that the node itself calculates its own position, so it is necessary for it to have at least three knots with known coordinates. An unknown node evaluates its angle to each of the three reference nodes, based on these corners and at the positions of the reference nodes (which form the triangle), calculates its own position using simple trigonometric relationships.Methods of Determination Between Objects by Sensor Networks |
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