YD-T 3934-2021Ka频段移动中使用的车载卫星通信地球站通用技术要求.pdfVIP

ICS 33.060.30 M 35 YD Communications Industry Standard of the People’s Republic of China 2021-W109-YD Generaltechnical requirements for Ka-band vehicle mounted satellite communications earth station under mobile using Ka频段移动中使用的 车载卫星通信地球站通用技术要求 （English Translation） Issue Date:20 19-03-29 Implementation date:20 19-04-01 Issued by Ministry of Industry and Information Technology of the Peoples Republic of China 2021-W109-YD Contents Foreword IV 1 Scope1 2 Normative references1 3 Composition2 4 Basic functions2 5 Performance characteristics2 5.1 Working frequency band2 5.2 Transmission signal and channelcharacteristics2 5.2.1 Maximum off-axis EIRP spectraldensity2 5.2.2 Stability of EIRP3 5.2.3 Adjustment of transmission power3 5.2.4 Stability of transmission frequency3 5.2.5 Gain flatness3 5.2.6 Third-order intermodulation3 5.2.7 Spurious4 5.2.8 Phase noise4 5.3 Antenna characteristics4 5.3.1 General requirements4 5.3.2 Antenna sidelobe characteristics4 5.3.3 Cross-polarization discrimination rate5 5.3.4 Voltage Standing Wave Ratio5 5.3.5 Transceiver port isolation5 5.3.6 Antenna noise temperature5 5.3.7 Antenna mechanical performance5 5.3.8 Capture and Track6 5.4 Interface7 5.4.1 User Ethernet interface7 5.4.2 IF interface7 6 System monitoring and management7 6.1 Monitoring function7 I 2021-W109-YD 6.2 Configuration function8 6.3 Alarm function8 6.4 Statistics function8 7. Vehicle requirements8 7.