New Logic-Based Estimation/Guidance Algorithm for Improved Homing Against Randomly Maneuvering Targets

Shinar, J.; Turetsky, Vladimir; Oshman, Yaakov

doi:10.2514/6.2004-4886

Cited by 8 publications

(9 citation statements)

References 14 publications

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“…Therefore, the evader maneuver of the form of (22) is used as a test in evaluating different pursuer guidance laws (see, e.g. [14,16]). In Figure 2, the average miss distance of 100 random noise samples is depicted as a function of t sw for the interception data, given in Table I, and initial range r 0 = 20 km.…”

Section: Motivation Of the Game With Information Delaysmentioning

confidence: 99%

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A linear differential game with bounded controls and two information delays

Glizer

Turetsky

2008

Optim Control Appl Methods

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The problem of intercepting a maneuvering target by a guided interceptor is considered. It is assumed that the interceptor gets the information on the relative velocity and the target lateral acceleration with time delays. This problem is formulated as a zero-sum differential game with information delays. By using the uncertainty set concept, this differential game is transformed to a new perfect information differential game with a delayed dynamics. The solution of this game is derived, yielding the interception strategy. Illustrative examples are presented.

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Section: Motivation Of the Game With Information Delaysmentioning

confidence: 99%

“…The ECA filter has two tuning parameters [16,17]: the time constant f of the ECA model and the proportionality factor C f of the model process noise covariance 2 f = (a max e /C f ) 2 . In the current simulation, f = 1 s, C f = 1 are selected.…”

Section: Motivation Of the Game With Information Delaysmentioning

confidence: 99%

A linear differential game with bounded controls and two information delays

Glizer

Turetsky

2008

Optim Control Appl Methods

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“…In the last years several efforts were made (Shinar and Shima, 2002;Shima et al, 2002;Shima et al, 2003) towards achieving robust homing performance with respect to random target maneuvers and to reduce the guaranteed miss distance. In a recent paper (Shinar et al, 2004.) a new integrated logic based estimation/guidance algorithm is based on a set of innovative concepts, was proposed.…”

Section: Dynamic Modelmentioning

confidence: 99%

“…Moreover, even if the "jump" occurs shortly after the time anticipated by the estimator, the estimated state variables will have rather small errors. Consequently, a set of "tuned" estimators can provide good estimates, if the time of the "jump" is detected without a significant delay (Shinar et al, 2004.). Therefore, there is a need for fast detection of the unknown disturbance input (the "jump") with a small false alarm rate.…”

Section: Introductionmentioning

confidence: 99%

On the Detection of Unknown Input in Positional Control Problems With Noisy Measurements

Shinar

Bokor

Kulcsár

2005

IFAC Proceedings Volumes

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“…The main error sources responsible for non-zero miss distances are as follows: (a) noisy measurements, (b) non-ideal dynamics of the guidance system, (c) contribution of target maneuver, (d) absence of seeker, and (e) limited missile maneuverability leading to saturation. 5,6 Simulation studies and flight tests have demonstrated that adequate maneuverability advantage of a seeker-less interceptor can make the resulting miss distances sufficiently small. 7,8 Most optimal missile guidance laws in the literature were obtained based on a linearized kinematics formulation, where usually the limited maneuver potential of the interceptor is not explicitly taken into account.…”

Section: Introductionmentioning

confidence: 99%

An integrated estimation/guidance approach for seeker-less interceptors

Kumar

Ghose

Vengadarajan

2014

Proceedings of the Institution of Mechanical Engineers, Part G:

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This paper addresses the problem of intercepting highly maneuverable threats using seeker-less interceptors that operate in the command guidance mode. These systems are more prone to estimation errors than standard seeker-based systems. In this paper, an integrated estimation/guidance (IEG) algorithm, which combines interactive multiple model (IMM) estimator with differential game guidance law (DGL), is proposed for seeker-less interception. In this interception scenario, the target performs an evasive bang-bang maneuver, while the sensor has noisy measurements and the interceptor is subject to acceleration bound. The IMM serves as a basis for the synthesis of efficient filters for tracking maneuvering targets and reducing estimation errors. The proposed game-based guidance law for two-dimensional interception, later extended to three-dimensional interception scenarios, is used to improve the endgame performance of the command-guided seeker-less interceptor. The IMM scheme and an optimal selection of filters, to cater to various maneuvers that are expected during the endgame, are also described. Furthermore, a chatter removal algorithm is introduced, thus modifying the differential game guidance law (modified DGL). A comparison between modified DGL guidance law and conventional proportional navigation guidance law demonstrates significant improvement in miss distance in a pursuer-evader scenario. Simulation results are also presented for varying flight path angle errors. A numerical study is provided which demonstrates the performance of the combined interactive multiple model with game-based guidance law (IMM/DGL). Simulation study is also carried out for combined IMM and modified DGL (IMM/modified DGL) which exhibits the superior performance and viability of the algorithm reducing the chattering phenomenon. The results are illustrated by an extensive Monte Carlo simulation study in the presence of estimation errors.

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New Logic-Based Estimation/Guidance Algorithm for Improved Homing Against Randomly Maneuvering Targets

Cited by 8 publications

References 14 publications

A linear differential game with bounded controls and two information delays

A linear differential game with bounded controls and two information delays

On the Detection of Unknown Input in Positional Control Problems With Noisy Measurements

An integrated estimation/guidance approach for seeker-less interceptors

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