| Title |
TDOA Based Moving Target Velocity Estimation in Sensor Network |
| Authors |
김용휘(Kim, Yong Hwi) ; 박민수(Park, Min Soo) ; 박진배(Park, Jin Bae) ; 윤태성(Yoon, Tae Sung) |
| DOI |
https://doi.org/10.5370/KIEE.2015.64.3.445 |
| Keywords |
TDOA ; FDOA ; Moving Target Localization ; Sensor Network ; Least Squares ; IV method |
| Abstract |
In the moving target problem, the velocity information of the moving target is very important as well as the high accuracy position information. To solve this problem, active researches are being conducted recently with combine the Time Difference of Arrival (TDOA) and Frequency Delay of Arrival(FDOA) measurements. However, since the FDOA measurement is utilizing the Doppler effect due to the relative velocity between the target source and the receiver sensor, it may be difficult to use the FDOA measurement if the moving target speed is not sufficiently fast. In this paper, we propose a method for estimating the position and the velocities of the target by using only the TDOA measurements for the low speed moving target in the indoor environment with sensor network. First, the target position and heading angle are obtained from the estimated positions of two attached transmitters on the target. Then, the target angular and linear velocities are also estimated. In addtion, we apply the Instrumental Variable (IV) technique to compensate the estimation error of the estimated target velocity. In simulation, the performance of the proposed algorithm is verified. |