ISO 17520:2016

Space environment (natural and artificial) — Cosmic ray and solar energetic particle penetration inward the magnetosphere — Method of determination of the effective vertical cut-off rigidity

ISO 17520:2016 describes the effective vertical cut-off rigidities of charged particles for near-Earth space and establishes principal requirements for their calculation. In Annex A, the calculation technique is verified using a typical example. This International Standard can be used to develop calculation techniques based on different models of Earth's geomagnetic field.[1] The techniques are useful for determination of penetrating into the Earth's magnetosphere by charged particle fluxes, as well as for test and estimations of the impact on spacecraft and other equipment in the near-Earth space. This International Standard is valid for calculating the particle penetration by any of the component of interplanetary charged particles (Galactic, Solar, and Anomalous) with rigidities above 0,2 GV. The main goals of the present standardization for the determination of the effective vertical geomagnetic cut-off rigidities are as follows: - provide an unambiguous procedure for calculation of the cut-off rigidities inside of the Earth's magnetosphere reflecting dependences on geomagnetic disturbances and local time; - provide means of estimation of the impact of charged particle fluxes in interpretation and analysis of space experiments; - provide efficient calculations of the transmission functions of low-altitude orbits of spacecraft and manned space-station; - determine impact of solar energetic particle flux on spacecraft instrumentation and astronauts using results of independent online measurement of interplanetary particle fluxes.

Systèmes spatiaux (naturel et artificiel) — Rayons cosmiques et pénétration de particule énergétique solaire dans la magnétosphère — Méthode de détermination de la rigidité de coupure verticale effective

General Information

• Status: Withdrawn
• Publication Date: 19-Apr-2016
• ICS: 49.140 - Space systems and operations
• Technical Committee: ISO/TC 20/SC 14 - Space systems and operations
• Drafting Committee: ISO/TC 20/SC 14 - Space systems and operations
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 06-Mar-2024

Relations

• Revised: ISO 17520:2024 - Space environment (natural and artificial) — Cosmic ray and solar energetic particle penetration inward the magnetosphere — Method of determination of the effective vertical cut-off rigidity
• Effective Date: 06-Jun-2022

Standards Content (Sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 17520
ISO/TC 20/SC 14 Secretariat: ANSI
Voting begins on: Voting terminates on:
2015-09-28 2015-12-28
Space environment (natural and artificial) — Cosmic
ray and solar energetic particle penetration inward the
magnetosphere — Method of determination of the effective
vertical cut-off rigidity
Systèmes spatiaux — Environnement spatial — Rayons cosmiques et pénétration de particule énergétique
solaire dans la magnétosphère: méthode de la détermination de coupure verticale effective
ICS: 49.140
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 17520:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2015

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ISO/DIS 17520:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2015 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/DIS 17520:2015
Contents
Foreword . 5
Introduction. 6
1 Scope . 7
2 Terms and definitions . 7
3 General concepts and assumptions . 9
4 Model requirements. 10
Annex A (informative) Effective vertical cut-off determination procedure . 12
Annex B (informative) Presentation of the results . 13
Annex C (informative) Method for effective vertical cut-off data generalization for different
conditions . 14
References . 19


© ISO 2015 – All rights reserved 3

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ISO/DIS 17520:2015
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national
standards bodies (ISO member bodies). The work of preparing International Standards is normally
carried out through ISO technical committees. Each member body interested in a subject for which a
technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part in
the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
Attention is dr
...

INTERNATIONAL ISO
STANDARD 17520
First edition
2016-04-01
Space environment (natural and
artificial) — Cosmic ray and solar
energetic particle penetration inward
the magnetosphere — Method of
determination of the effective vertical
cut-off rigidity
Systèmes spatiaux (naturel et artificiel) — Rayons cosmiques et
pénétration de particule énergétique solaire dans la magnétosphère
— Méthode de détermination de la rigidité de coupure verticale
effective
Reference number
ISO 17520:2016(E)
©
ISO 2016

---------------------- Page: 1 ----------------------
ISO 17520:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 17520:2016(E)

Contents  Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Terms and definitions . 1
3  General concepts and assumptions . 3
3.1 Determination of effective vertical cut-off rigidity . 3
3.2 Models of the employed geomagnetic field . 3
3.3 Effective vertical cut-off rigidity databases (libraries). 4
3.4 Method for effective vertical cut-off data generalization . 4
4  Model requirements . 4
4.1 General . 4
4.2 Parameterization . 4
Annex A (informative) Effective vertical cut-off determination procedure .5
Annex B (informative) Presentation of the results . 6
Annex C (informative) Method for effective vertical cut-off data generalization for
different conditions . 7
Bibliography .11
© ISO 2016 – All rights reserved iii

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ISO 17520:2016(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee
...