TY - JOUR
T1 - Line of Sight (LOS) rate estimation in strap down seekers using discrete-time extended state observer.
TT - تخمین نرخ چرخش خط دید در جستجوگرهای چسبیده به بدنه با استفاده از رویتگر توسعهیافته زمانگسسته
JF - joc-isice
JO - joc-isice
VL - 16
IS - 2
UR - http://joc.kntu.ac.ir/article-1-875-en.html
Y1 - 2022
SP - 55
EP - 67
KW - Discrete-time Extended State Observer
KW - LOS rate Estimation
KW - Strap Down Seeker
KW - Proportional Guidance law.
N2 - The line of sight (LOS) rate is a parameter that is needed to calculate the acceleration applied to missiles by the proportional guidance laws in order to hit the target. This rate is usually measured using gimbaled seekers. However, if the type of missile seeker be strap down, the LOS rate must be calculated from deriving the missile's seeker output angles or estimation methodes. The derivation method is not desirable due to the noisy output of the seekers and low pass filters are needed to achieve an acceptable output, which will cause a lag in the guidance loop. In this paper, a discrete time extended state observers will be designed to estimate the LOS rate. The advantage of the time discontinuity of the observer is that issues related to the implementation of the observer on the processors, such as the choice of sampling time, considered from the design level and examined in computer simulation.
M3 10.52547/joc.16.2.55
ER -