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GB/T 12639-2021: Methods of in-orbit testing for GEO communication satellite payload performance
Status: Valid GB/T 12639: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12639-2021 | English | 499 |
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Methods of in-orbit testing for GEO communication satellite payload performance
| Valid |
GB/T 12639-2021
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| GB/T 12639-1990 | English | 919 |
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Methods of in-orbit testing for communication satellite payload performances
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GB/T 12639-1990
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PDF similar to GB/T 12639-2021
Basic data | Standard ID | GB/T 12639-2021 (GB/T12639-2021) | | Description (Translated English) | Methods of in-orbit testing for GEO communication satellite payload performance | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | V70 | | Word Count Estimation | 25,216 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 12639-2021: Methods of in-orbit testing for GEO communication satellite payload performance---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods of in-orbit testing for GEO communication satellite payload performance
ICS 49.020
CCSV70
National Standards of People's Republic of China
Replace GB/T 12639-1990
Geosynchronous orbit communication satellite payload
On-orbit test method
Released on 2021-08-20
2022-03-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Abbreviations 1
5 Test purpose 1
6 Test file 2
7 Test system 2
7.1 Test system composition 2
7.2 Test system requirements 2
7.3 Test system calibration 3
8 Test condition 4
9 Test item 5
10 Test method 5
10.1 Static noise spectrum 5
10.2 Input and output characteristics 6
10.3 SFD and saturated EIRP 7
10.4 Satellite quality factor G/T 8
10.5 Amplitude-frequency characteristics 9
10.6 Gain stability 10
10.7 Out-of-band suppression characteristics 11
10.8 Clutter characteristics 12
10.9 Accuracy and stability of local oscillator frequency 12
10.10 Beacon EIRP and frequency characteristics 13
10.11 Antenna polarization isolation 15
10.12 Antenna pattern 16
10.13 Gain control characteristics 16
10.14 Group delay characteristics 17
10.15 Third-order intermodulation 18
10.16 ALC level control characteristics 19
10.17 ALC stability 20
11 Test report 21
Appendix A (informative) Calculation of satellite link-related transmission parameters 22
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 12639-1990 "Communication Satellite Payload Performance In-orbit Test Method", and GB/T 12639-1990
In comparison, the main technical changes are as follows.
a) The requirements for test documents, test conditions and test systems have been added (see Chapter 6, 7.2, and Chapter 8);
b) Improve the test project, standardize the test project name, optimize the test connection block diagram, test operation steps and data processing methods;
c) Added out-of-band suppression characteristics, clutter characteristics, antenna polarization isolation, gain control characteristics, ALC level control characteristics, ALC
Stability and other test items and test methods (see Chapter 9, 10.7, 10.8, 10.11, 10.13, 10.16, 10.17);
d) Modified the test methods of the local oscillator frequency accuracy and stability, group delay characteristics test items (see 10.9, 10.14,.1990 edition
3.5, 3.7);
e) Deleted the test items and test methods of AM and phase modulation conversion coefficient, transponder amplitude compression coefficient, satellite intelligible crosstalk, etc.
(1990 version of 3.9, 3.10, 3.11);
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the National Aerospace Technology and Application Standardization Technical Committee (SAC/TC425).
Drafting organizations of this document. General Department of Communications and Navigation Satellites of China Academy of Space Technology, China Institute of Aerospace Standardization, China Satellite Communications
Group Co., Ltd., the 63921 Unit of the Chinese People's Liberation Army, and the 61096 Unit of the Chinese People's Liberation Army.
The main drafters of this document. Ma Qiang, Xu Rujun, Yang Bo, Zheng Yuhong, Zhong Liangyu, Suo Honghai, Yang Dongxue, Wen Yan, Qi Shengjun, Qu Huipeng, Jiang
Long Cheng, Guo Xinzhe, Sun Haiyan, Wei Zhenchao, Xu Dongyan, Xia Weina, Zhang Bohan.
This document was first published in.1990, and this is the first revision.
Geosynchronous orbit communication satellite payload
On-orbit test method
1 Scope
This document specifies the test files, test conditions, test systems, and test items for the on-orbit test of the geosynchronous orbit communication satellite payload.
Projects, test methods and test reports, etc.
This document applies to the transparent forwarding of geosynchronous orbit communication satellites and the transparent forwarding of signal processing payloads.
Road test in orbit. The ground test of satellite transponder can also refer to this document.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 29080 Evaluation of flight results of geosynchronous orbit communication satellites
YD/T 984 satellite communication link atmospheric and rain attenuation calculation method
3 Terms and definitions
The terms and definitions defined in GB/T 29080 and YD/T 984 are applicable to this document.
4 Abbreviations
The following abbreviations apply to this document.
ALC. Automatic Level Control (AutomaticLevelControl)
EIRP. Equivalent Isotropic Radiated Power (Equivalent Isotropic Radiated Power)
FGM. Fixed Gain Mode (FixedGainMode)
G/T. The ratio of the antenna gain to the noise temperature of the receiving system (also known as the receiving system quality factor (Gain/T emperature))
IF. IntermediateFrequency
LF. Low Frequency (LowFrequency)
SFD. Saturated Flux Density (SaturatedFluxDensity)
SSPA. Solid State Power Amplifier (SolidStatePowerAmplifier)
TWTA. Traveling Wave Tube Amplifier (TravelingWaveTubeAmplifier)
5 Test purpose
The purpose of the test is to obtain the performance of the payload in orbit after the satellite has undergone the launch and transfer orbit phases.
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