Academic Journal

Angle-Only Filtering of a Maneuvering Target in 3D

التفاصيل البيبلوغرافية
العنوان: Angle-Only Filtering of a Maneuvering Target in 3D
المؤلفون: Mahendra Mallick, Xiaoqing Tian, Yun Zhu, Mark Morelande
المصدر: Sensors; Volume 22; Issue 4; Pages: 1422
بيانات النشر: Multidisciplinary Digital Publishing Institute
سنة النشر: 2022
المجموعة: MDPI Open Access Publishing
مصطلحات موضوعية: angle-only filtering in 3D, infrared search and track (IRST) sensor, maneuvering target tracking, cubature Kalman filter (CKF), Itô stochastic differential equation
الوصف: We consider the state estimation of a maneuvering target in 3D using bearing and elevation measurements from a passive infrared search and track (IRST) sensor. Since the range is not observable, the sensor must perform a maneuver to observe the state of the target. The target moves with a nearly constant turn (NCT) in the XY-plane and nearly constant velocity (NCV) along the Z-axis. The natural choice for the NCT motion is to allow perturbations in speed and angular rate in the stochastic differential equation, as has been pointed out previously for a 2D scenario using range and bearing measurements. The NCT motion in the XY-plane cannot be discretized exactly, whereas the NCV motion along the Z-axis is discretized exactly. We discretize the continuous-time NCT model using the first and second-order Taylor approximations to obtain discrete-time NCT models, and we consider the polar velocity and Cartesian velocity-based states for the NCT model. The dynamic and measurement models are nonlinear in the target state. We use the cubature Kalman filter to estimate the target state. Accuracies of the first and second-order Taylor approximations are compared using the polar velocity-based and Cartesian velocity-based models using Monte Carlo simulations. Numerical results for realistic scenarios considered show that the second-order Taylor approximation provides the best accuracy using the polar velocity or Cartesian velocity-based models.
نوع الوثيقة: text
وصف الملف: application/pdf
اللغة: English
Relation: Physical Sensors; https://dx.doi.org/10.3390/s22041422
DOI: 10.3390/s22041422
الاتاحة: https://doi.org/10.3390/s22041422
Rights: https://creativecommons.org/licenses/by/4.0/
رقم الانضمام: edsbas.905D279F
قاعدة البيانات: BASE