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25644

SIMULATION OF BALLISTIC MISSILE MOTION IN FREE-FLIGHT (BALLISTIC) PHASE USING NAVSTAR (GPS) NAVIGATION MODEL

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Last updated: 24 Dec 2024

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Abstract

The accuracy of Ballistic Missile (BM) guidance is mainly dependent on the accuracy of the navigation system used. Majority of BM's apply the inertial navigation system (INS) where the inaccuracies of its sensors (accelerometers and gyros) induce errors which may accumulate to intolerable values due to increased flight time. The guidance is restricted only to the powered flight phase of the whole BM trajectory. In the present paper we navigate the BM motion in the free-flight phase (ballistic phase) using the NAVSTAR/GPS model and an implementation of the BM motion in the ballistic phase. The simulation includes several cases of ballistic trajectories applied on the GPS model that includes 24 satellites constellation. pseudo-range and ephemeries data are simulated, and the application of the principle of minimum geometric dilution of precision (GDOP) is performed. The implementation of the BM motion in the free-flight phase is applied on the optimum trajectories using the Keplerian orbit (elliptical section) in which Kepler's equation is solved at each instant on the trajectory by Newton Raphson method.The results of the different algorithms of implementation are evaluated. The solution of GPS equations is executed for BM motion in the ballistic trajectory using the iterative method. Different algorithms for selection of GPS model are given.

DOI

10.21608/asat.1993.25644

Authors

First Name

S.

Last Name

Gadalla

MiddleName

A.

Affiliation

Department of Guidance, M.T.C.,Cairo,Egypt.

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City

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Orcid

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First Name

M.

Last Name

EL-lithy

MiddleName

A.

Affiliation

Department of Guidance, M.T.C.,Cairo,Egypt.

Email

-

City

-

Orcid

-

First Name

A.

Last Name

Makarious

MiddleName

H.

Affiliation

Department of Guidance, M.T.C.,Cairo,Egypt.

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-

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-

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Volume

5

Article Issue

ASAT CONFERENCE 4 - 6 May 1993, CAIRO

Related Issue

4665

Issue Date

1993-05-01

Receive Date

2019-01-22

Publish Date

1993-05-01

Page Start

419

Page End

428

Print ISSN

2090-0678

Online ISSN

2636-364X

Link

https://asat.journals.ekb.eg/article_25644.html

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https://asat.journals.ekb.eg/service?article_code=25644

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35

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Original Article

Type Code

737

Publication Type

Journal

Publication Title

International Conference on Aerospace Sciences and Aviation Technology

Publication Link

https://asat.journals.ekb.eg/

MainTitle

SIMULATION OF BALLISTIC MISSILE MOTION IN FREE-FLIGHT (BALLISTIC) PHASE USING NAVSTAR (GPS) NAVIGATION MODEL

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Article

Created At

22 Jan 2023