Impact Angle Guidance Using State-Dependent (Differential) Riccati Equation: Unified Applicability Analysis

Li, Lin; Xin, Ming

doi:10.2514/1.g005244

Cited by 10 publications

(1 citation statement)

References 21 publications

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“…Moreover, [13] researched the maneuvering target interception guidance method based on virtual field-of-view limits and [14][15] explored the guidance strategy considering the minimum field-of-view angle limit and the field-of-view constraint of the jet linkage seeker. In [16], the authors utilized the state-related Riccati equation to analyze the uniform applicability of impact angle control guidance, and [17] analyzed the leadangle-based angle restriction interception. In [18][19], the authors studied the impact time constrained guidance law considering the field-of-view limitations.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Line-of-Sight Angle Characteristics for Intercepting a Non-Maneuvering Target With Impact Angle Constraints

et al. 2023

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With the widespread informationization in modern warfare, higher requirements are required for monitoring the high-value target's movement state and the corresponding attack conditions. Since the impact-angle constraint guidance law can improve the striking effect of a missile, the study of the hitting conditions and corresponding angle range of the attack angle constraint guidance law has become particularly important. This paper proposes a relationship between the missile's line-of-sight and flight-path angle under terminal conditions and defines the line-of-sight selection region. Then, we analyze the selection method of the line-of-sight restriction at the end of the missile's terminal phases. Additionally, Cauchy's inequality is used to derive the mathematical expressions for line-of-sight selection region under extreme and ideal conditions when employing the developed guidance law to intercept non-maneuvering targets. Finally, a thorough analysis and numerous simulations demonstrate that the line-of-sight angle always falls within the extreme selection region during the entire flight and before hitting the target at the expected impact angle. Compared with a head-on interception, the line-of-sight selection region of the tail-chase case is broader, and the selection region range increases with the upward trend of the acceleration limit.INDEX TERMS impact angle constraint, line-of-sight selection region, acceleration limit, tail-chase attack, head-on interception.

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