رئوس مطالب
- چکیده
- 1 مقدمه
- 1.1 گذر مختصری بر نوشته ها
- 1.2 سهم های جدید
- 2 اظهار مسئله
- 3. راهبرد هدایت سنسور سیار
- 4 الگوریتم مسیریابی
- 4.1 استقرار هدف
- 4.2 استقرار سنسور سیار
- 4.3 استقرار سنسور سیار و هدف متصل
- 4.4 شرایط استقرار
- 5 خطای مسیریابی وزنی و مسیر یابی تکراری
- 6 قید کرامر-راو پسین
- 7 نتایج عددی
- 8 نتیجه گیری
Abstract
IN rapidly growing applications in areas such as automated recent years, wireless sensor networks have found data collection, surveillance, and environmental monitoring. One important use of sensor networks is the tracking of a mobile target (point source) by the network [1]. Mobile target tracking has a number of practical applications, including robotic navigation, search-rescue, wildlife monitoring, and autonomous surveillance. Typically, target tracking involves two steps. First, it needs to estimate or predict target positions from noisy sensor data measurements. Second, it needs to control mobile sensor tracker to follow or capture the moving target. In this paper, we study the problem of mobile target positioning in a sensor network that consists of stationary sensors and a mobile sensor. The goal is to estimate the target position and to control the mobile sensor for tracking the moving target.
Conclusions
We study the problem of tracking a moving target using navigated mobile sensors in wireless sensor networks. With unknown target and mobile sensor locations, we need to estimate the locations of the target and the mobile sensors first. Based on a more general TOA measurement model, convex optimization algorithms through SDP relaxation are developed for localization. We provide a sequential algorithm and a joint weighted localization algorithm before controlling the mobile sensor movement to follow the target. For the navigation of mobile sensors, the cubic law is applied. Simulation results illustrate successful tracking and navigation performance for the proposed algorithms under different trajectories and noises.