Volume 37, Number 5, October 2019
|Page(s)||871 - 877|
|Published online||14 January 2020|
Cramér-Rao Lower Bound of Target Localization Method Based on TOA Measurements
School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
2 The 28 th Research Institute of China Electronic Technology Corporation, Nanjing 210007, China
The Cramér-Rao bound of target localization method based on time-of-arrival measurements is analyzed. For the localization error analysis, the CRLB is derived under the assumptions that the measurement errors are independent and characterized by zero-mean Gaussian distributed process with identical variance, which is not satisfied in the situation of localizing noncooperative targets. Cramér-Rao bound is deduced by using the fact that the variances of TOA measurements of different sensors are affected by the signal-to-noise ratio of the echo signal and are different from each other. Simulations of Monte Carlo experiments are carried out so as to verify the analytical results.
Key words: target localization / Cramér-Rao lower bound / TOA measurements
关键字 : 目标定位 / 克拉美罗界 / 到达时间估计
© 2019 Journal of Northwestern Polytechnical University. All rights reserved.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.