Practical Dual-Control Guidance Using Adaptive Intermittent Maneuver Strategy

Biased PNG for target observability enhancement against nonmaneuvering targets

“…According to references in [10,25], we assume that the LOS angle is measured at 20 Hz from the look angle derived from the seeker and the pitch angle obtained from the built-in INS, and it is corrupted by a white Gaussian noise with a zero mean and variance as σ 2 L = 9 (m rad) 2 . In addition, the guidance command is computed using the state variables as given by (18).…”

“…8, which represents the statistics of miss distance under PNG and BPNG-31. The achieved miss distance is defined as the remaining distance of r Y when r X approaches zero [10]. The percentage of the y-axis in Fig.…”

“…Based on the linear-quadratic control methodology, the authors in [9] developed a guidance algorithm to enhance target observability. Intermittent maneuver, a trajectory modulation technique of PNG, was suggested in [10]. In [11], a squint biased proportional navigation guidance (BPNG) was proposed, which provides visibility of an intractable target and some observability improvement.…”

Observability Analysis on Radome Aberration Estimation

“…Two different guidance algorithms, Proportional Navigation Guidance (PNG) law and Adaptive Intermittent Maneuver (AIM), are utilized to generate missile guidance command. AIM is designed by Lee (2001) in order to maintain LOS angle rate to be larger than a certain level during flight. The design parameters of guidance laws are defined as below.…”

Analysis of Guidance Laws With Nonmonotonic Line-of-Sight Rate Convergence

“…The primary objective of homing guidance is to enter a collision course, whereas the other manoeuvre goals benefit from larger deviation in the flight trajectory from the collision course, inevitably yielding non-monotonic behaviours in the heading error. Dual-control guidance strategies such as adaptive intermittent manoeuvre (AIM) strategy [1]- [3] and optimal guidances [4]- [6] intentionally involve the line-of-sight (LOS) rate excitation to suffice an observability condition [2], [7]- [12] while sacrificing the convergence to the collision course. Also, evasive guidance strategies were designed for anti-ship missiles to accomplish target interception while enhancing the survivability against ship defence systems [13]- [15], where the weaving motion leads to deviation from the collision course.…”