ISO 23569-2021 PDF

Full title and description

St ISO 23569-2021 — Space systems — Spacecraft system level radio frequency (RF) performance test in compact range. This International Standard specifies verification test activities for assessing the radio‑frequency performance of integrated spacecraft at system level when tests are carried out in a compact range (compact antenna test range) including test items, test requirements, typical test procedures, and test‑facility and chamber environment considerations.

Abstract

ISO 23569:2021 defines the scope, measurement items and recommended procedures for system‑level RF verification of spacecraft using a compact range. It covers the selection and tailoring of test items (for example EIRP, G/T, SPFD, AFR, group delay and PIM), instrumentation and calibration needs, quiet‑zone and chamber environment requirements, safety/grounding and test reporting practices to support reliable over‑the‑air system performance assessment.

General information

• Status: Published.
• Publication date: November 2021.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.140 (Space systems).
• Edition / version: Edition 1 (2021).
• Number of pages: 44 pages.

Scope

This standard applies to system‑level RF performance testing of integrated spacecraft when using a compact range (indoor collimated‑wave test facility). It is intended for tests that verify spacecraft transmit and receive performance as‑integrated (for example EIRP, G/T and related metrics), and it covers facility, chamber and procedural requirements necessary to obtain representative, reproducible measurements in a compact‑range quiet zone. The document is not a component‑level antenna design standard but focuses on system‑level verification using compact range techniques.

Key topics and requirements

• Defined RF performance test items: EIRP, G/T, saturated power flux density (SPFD), amplitude‑frequency response (AFR), group delay and passive intermodulation (PIM), with tailoring by mission/test program.
• Typical test procedures and sequence for system‑level over‑the‑air measurements in a compact range, including calibration, RF link budget, and absolute/relative measurements.
• Test‑facility requirements: quiet‑zone definition and performance, feed and reflector characteristics, chamber absorption, EM isolation and grounding provisions, and environmental control (temperature, cleanliness) for repeatable results.
• Instrumentation and calibration: recommended practices for power meters, vector network analysers, gain/gain‑to‑noise‑temperature references, cable‑loss calibration and range‑feed calibration data.
• Safety, hazard identification and high‑power RF precautions, including grounding and personnel exclusion zones for high SPFD tests.
• Reporting and data products: required test reports, data formats, uncertainty statements and acceptance criteria to support verification and downstream mission analysis.

Typical use and users

Primary users are spacecraft and payload manufacturers, systems engineers, antenna and RF test laboratories, government space agencies and prime integrators performing pre‑launch verification of spacecraft RF communications and payload performance using compact range facilities. National/international test facilities (e.g., ESA, NASA and specialized commercial compact ranges) use these practices to validate system‑level RF behaviour prior to flight.

Related standards

ISO 23569:2021 complements other space and RF standards and test practices such as ECSS/ECSS‑E series documents addressing RF and antenna testing, and national/international measurement best‑practice documents for antenna/compact‑range measurement. Organizations and documents referenced for consistent application include ECSS RF/Electrical standards and facility‑level guidance from space agencies and antenna‑range suppliers.

Keywords

spacecraft RF test; compact range; compact antenna test range (CATR); EIRP; G/T; SPFD; quiet zone; antenna system test; over‑the‑air verification; RF calibration; system‑level test.

FAQ

Q: What is this standard?

A: ISO 23569:2021 is an international standard that defines requirements and recommended practices for conducting spacecraft system‑level RF performance tests in a compact range environment.

Q: What does it cover?

A: It covers the measurable RF performance items and the associated test procedures, facility and chamber environment requirements, calibration and safety considerations needed to perform reliable over‑the‑air system‑level measurements in compact antenna test ranges. Examples of test items explicitly addressed include EIRP, G/T, SPFD, AFR, group delay and PIM.

Q: Who typically uses it?

A: Spacecraft and payload manufacturers, RF and antenna test laboratories, systems integrators, and space agencies performing pre‑launch verification and qualification of communications/payload RF performance. Test facility operators and range designers also use the standard when specifying compact‑range capabilities.

Q: Is it current or superseded?

A: ISO 23569:2021 is published and current as edition 1 (published November 2021). Users should check national standards bodies or ISO for any subsequent amendments or revisions.

Q: Is it part of a series?

A: It is a standalone ISO International Standard within the ISO space systems portfolio managed by ISO/TC 20/SC 14; it complements other ECSS and ISO documents that address related RF, antenna and spacecraft verification topics.

Q: What are the key keywords?

A: Compact range, spacecraft RF test, EIRP, G/T, SPFD, quiet zone, over‑the‑air, antenna test, calibration.