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

This document describes the effective vertical cut-off rigidities of charged particles for near-Earth space and establishes principal requirements for their calculation 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 spacecrafts and other equipment in the near-Earth space.

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: Published
• Publication Date: 05-Mar-2024
• 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: 6060 - International Standard published
• Start Date: 06-Mar-2024
• Due Date: 30-Dec-2023
• Completion Date: 06-Mar-2024

Relations

• Revises: 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
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 17520
Second edition
Space environment (natural and
2024-03
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 17520:2024(en) © ISO 2024

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ISO 17520:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

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ISO 17520:2024(en)
Contents  Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  General concepts and assumptions . 3
4.1 Determination of effective vertical cut-off rigidity .3
4.2 Models of the employed geomagnetic field .4
4.3 Effective vertical cut-off rigidity databases (libraries) .4
4.4 Method for effective vertical cut-off data generalization . .4
5  Model requirements . 4
5.1 General .4
5.2 Parameterization.4
Annex A (informative)  Effective vertical cut-off determination procedure . 5
Annex B (informative) Method for effective vertical cut-off data generalization for different
conditions . 6
Bibliography . 14

© ISO 2024 – All rights reserved
iii

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ISO 17520:2024(en)
Foreword
ISO (the International Organization for Standardiz
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 17520
ISO/TC 20/SC 14
Space environment (natural and
Secretariat: ANSI
artificial) — Cosmic ray and solar
Voting begins on:
2023-12-07 energetic particle penetration inward
the magnetosphere — Method of
Voting terminates on:
2024-02-01
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
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 17520:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 17520:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 17520
ISO/TC 20/SC 14
Space environment (natural and
Secretariat: ANSI
artificial) — Cosmic ray and solar
Voting begins on:
energetic particle penetration inward
the magnetosphere — Method of
Voting terminates on:
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
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 17520:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 17520:2023(E)
Contents  Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  General concepts and assumptions .3
4.1 Determination of effective vertical cut-off rigidity . 3
4.2 Models of the employed geomagnetic field . 4
4.3 Effective vertical cut-off rigidity databases (libraries) . 4
4.4 Method for effective vertical cut­off data generalization . . 4
5  Model requirements .
...

ISO/FDIS 17520:2023(E)
ISO/TC 20/SC 14/WG 4
Secretariat: ANSI/AIAA
Date: 2023-11-0923
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
FDIS stage

---------------------- Page: 1 ----------------------
ISO/FDIS 17520:2023(E)
© ISO 202023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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'sISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CP 401 • Ch. de Blandonnet 8
CH-12111214 Vernier, Geneva 20
Tel. Phone: + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail: [e-mail]
Web www.iso.org
Website: www.iso.org
Published in Switzerland.
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 17520:2023(E)
Content
Page
© ISO 2023 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/FDIS 17520:2023(E)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General concepts and assumptions . 3
4.1 Determination of effective vertical cut-off rigidity . 3
4.2 Models of the employed geomagnetic field . 4
4.3 Effective vertical cut-off rigidity databases (libraries) . 4
4.4 Method for effective vertical cut-off data generalization . 4
5 Model requirements . 4
5.1 General . 4
5.2 Parameterization. 4
Annex A (informative) Effective vertical cut-off determination procedure . 6
Annex B (informative) Method for effective vertical cut-off data generalization for different conditions 8
Bibliography . 18

iv © ISO 2023 – All rights reserved

---------------------- Page: 4 ----------------------
ISO/FDIS 17520:2023(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 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 Electrotechnic
...