Results 31 to 40 of about 539,000 (325)
Optical approach of a hypercatadioptric system depth of field [PDF]
, 2010 A catadioptric system is composed of a mirror and a perspective camera. Since the mirror is curved and the distance between the mirror and the camera is short, some parts of the panoramic image keep blurred.
Zenou, Emmanuel, Zhang, Siyuan
core +1 more source
Optimal scan strategies for future CMB satellite experiments [PDF]
, 2016 The B-mode polarisation power spectrum in the Cosmic Microwave Background (CMB) is about four orders of magnitude fainter than the CMB temperature power spectrum.
Battye, Richard A. +3 more
core +4 more sources
An impact angle constraint integral sliding mode guidance law for maneuvering targets interception
Journal of Systems Engineering and Electronics, 2020 An integral sliding mode guidance law (ISMGL) combined with the advantages of the integral sliding mode control (SMC) method is designed to address maneuvering target interception problems with impact angle constraints.
Wenjie Zhang +3 more
semanticscholar +1 more source
IEEE Access, 2019 In order to ensure the normal operation of the guidance system and achieve precise reentry strike, it is necessary to complete the reentry guidance in a very short range of several hundred kilometers.
Ronggang Wang, Shuo Tang, Dong Zhang
doaj +1 more source
SPH Simulations of Direct Impact Accretion in the Ultracompact AM CVn Binaries [PDF]
, 2008 The ultracompact binary systems V407 Vul (RX J1914.4+2456) and HM Cnc (RX J0806.3+1527) - a two-member subclass of the AM CVn stars - continue to pique interest because they defy unambiguous classification.
Beuermann K. +10 more
core +3 more sources
Generalized Formulation of Weighted Optimal Guidance Laws with Impact Angle Constraint
, 2013 The purpose of this paper is to investigate the generalized formulation of weighted optimal guidance laws with impact angle constraint. From the generalized formulation, we explicitly find the feasible set of weighting functions that lead to analytical ...
Lee, Chang-Hun +2 more
core +1 more source
Quantum entanglement and spin control in silicon nanocrystal [PDF]
, 2012 Selective coherence control and electrically mediated exchange coupling of single electron spin between triplet and singlet states using numerically derived optimal control of proton pulses is demonstrated.
Berec, Vesna
core +3 more sources
Integrated Guidance and Control Law with Impact Angle Constraint [PDF]
Journal of the Korean Society for Aeronautical & Space Sciences, 2011 The concept of the IGC(Integrated Guidance and Control) has been introduced to overcome the performance limit of the SGC(Separated Guidance and Control) loop. A new type of IGC with impact angle constraint has been proposed in this paper. Angle of attack, pitch angle rate, pitch angle and line of sight angle are considered as state variables.
Joong-Sup Yun +2 more
openaire +1 more source
Field-of-View Constrained Impact Time Control Guidance via Time-Varying Sliding Mode Control
Aerospace, 2021 The problem of impact time control guidance with field-of-view constraint is addressed based on time-varying sliding mode control. The kinematic conditions that satisfy the impact time control with field-of-view constraint are defined, and then a novel ...
Shuai Ma, Xugang Wang, Zhongyuan Wang
doaj +1 more source
Second-Order Sliding Mode Guidance Law considering Second-Order Dynamics of Autopilot
Journal of Control Science and Engineering, 2019 Aiming at the requirement that some missiles need to meet certain impact angles when attacking targets, we consider the second-order dynamic characteristics of autopilot, thereby proposing a second-order sliding mode guidance law with impact angle ...
Kuanqiao Zhang, Suochang Yang
doaj +1 more source