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無源天線陣列檢測項目報價???解決方案???檢測周期???樣品要求? |
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本標準規(guī)定了防空導彈制導控制系統(tǒng)半實物仿真的試驗目的、試驗依據(jù)、試驗要求、試驗系統(tǒng)構(gòu)成及項目、試驗程序、試驗數(shù)據(jù)處理與結(jié)果評定、試驗報告。本標準適用于射頻尋的制導、光學尋的制導、射頻/光學復合尋的制導的防空導彈制導控制系統(tǒng)半實物仿真試驗。
本標準規(guī)定了移動通信系統(tǒng)多頻段基站無源天線(以下簡稱“天線”)的術(shù)語定義、分類、電性能、機械特性、環(huán)境條件、測量方法、檢驗規(guī)則以及標志、包裝、運輸和儲存。本標準適用于工作子頻段為806MHz~880MHz、870MHz~960MHz、1710MHz~1880MHz、1850MHz~1990MHz、1920MHz~2170MHz、2300MHz~2500MHz、2500MHz~2700MHz的移動通信系統(tǒng)多頻段基站無源天線。工作于以上頻段的單頻段基站無源天線可參照使用。同類型其他頻段的無源天線也可參照使用。智能天線不適用本標準。
本標準規(guī)定了TD-LTE數(shù)字蜂窩移動通信網(wǎng)智能天線的術(shù)語定義、分類、電性能、機械特性、環(huán)境條件、測量方法、檢驗規(guī)則以及標志、包裝、運輸和儲存等。本標準適用于工作于室外的工作頻段為1880MHz~1920MHz(band 39,稱為F頻段)、2010MHz~2025MHz(band 34,稱為A頻段)或2500MHz~2690MHz(band 41,稱為D頻段)的TD-LTE系統(tǒng)智能天線。其他類型的智能天線也可參照本標準。
本標準規(guī)定了5G大規(guī)模無源天線陣列的電性能及機械性能要求,明確電路參數(shù)指標、方向圖指標以及環(huán)境可靠性試驗的測試要求及方法。本標準適用于5G數(shù)字蜂窩移動通信網(wǎng)中非AAU設(shè)備的無源天線陣列。本標準適用于工作頻段為6GHz以下,包含但不限于以下工作頻段2515MHz~2675MHz、3400MHz~3600MHz和4800MHz~5000MHz。
本標準規(guī)定了5G大規(guī)模無源天線陣列電性能及機械性能的驗證測量方法以及測試場地和環(huán)境要求。本標準適用于工作頻段為6GHz以下,包含但不限于以下工作頻段2515MHz~2675MHz、3400MHz~3600MHz和4800MHz~5000MHz。
本標準規(guī)定了用于漁業(yè)船舶的射頻識別設(shè)備的組成、分類、功能、性能及安裝環(huán)境的通用技術(shù)要求。本標準適用于漁業(yè)船舶所用射頻識別設(shè)備的研制、選型和使用,可作為漁船射頻識別系統(tǒng)建設(shè)的參考依據(jù)。
本規(guī)范適用于110kV~1000kV交流架空輸電線路對符合相關(guān)標準要求的無線電臺有源干擾影響、無源干擾影響的防護設(shè)計。
本規(guī)范適用于±400kV~±800kV直流架空輸電線路對符合相關(guān)標準要求的無線電臺有源干擾影響、無源干擾影響的防護設(shè)計。
This Recommendation is intended to provide a basis for the derivation and estimation of the values of electromagnetic radiation from a broadcasting station that occurs at particular distances from the transmittersite. Using such information, responsible
This Recommendation is intended to provide a basis for the derivation and estimation of the values of electromagnetic radiation from a broadcasting station that occurs at particular distances from the transmitter site. Using such information, responsible organizations can then develop appropriate standards that may be used to protect humans from undesirable exposure to harmful radiation. The actual values to be applied in any regulation will naturally depend on decisions reached by responsible health agencies, domestic and worldwide.
This Recommendation provides unwanted emission power levels for the protection of EESS (passive)satellites operating in the band 1 400-1 427 MHz from MSS feeder links (space-to-Earth) that may operate inthe band 1 430-1 432 MHz and MSS feeder links (E
This Report presents an overview of Inspections Procedures in response to Question ITU-R 225/1 regarding inspection techniques and procedures. The Question relates to how administrations proceed in planning and conducting radio station inspections. The purpose of this Report is to provide general guidelines for planning and performing inspection activities on various types of radio stations. Inspection activities often include review and verification of both technical and administrative conditions assigned to a radio station or other spectrum user. Although the term “l(fā)icensed” is used throughout the document, this term can be considered here to include not only stations with licences issued by the regulatory authority, but also other authorized spectrum users (such as those operating with “l(fā)icence exempt” devices like low-power radios and RF devices operating under equipment standards approval). The primary focus of this report is to consider inspections that are conducted “on-site”, by visiting the transmitter location. Included in Annexes are some specific examples in certain services, toprovide examples of howthe general guidelines can be applied. This Report should be considered a general guidance document for inspections planning.
This Report is intended to provide a single basis for the derivation and estimation of the values of electromagnetic radiation from a broadcast station that occur at particular distances from the transmitter site. Using such information, responsible agencies can then develop appropriate standards that may be used to protect humans from undesirable exposure to harmful radiation.
This Report provides information on many of the technology trends concerning radio access networks foreseen at the time of preparation of Recommendation ITU-R M.1645.
There are a number of primary space research service (SRS) allocations that can be used by deep-space missions for telecommand, telemetry, and radiometric data collection. Some of these allocations are designated specifically for deep-space SRS missions and are not available to non-deep-space SRS missions, while other allocations are available to both deep-space and non-deep-space SRS missions.
There are various types of intermodulation that can be found. In radio systems, these are manifested in a number of ways and defined as the following five types in Rec. ITU-R SM.1446
The passive radio astronomy service (RAS) is studying natural phenomena producing radio emissions at frequencies fixed by the laws of nature. Primary allocations have been made to various space services in the Earth-to-space direction such as the fixed-satellite service (FSS), radionavigation-satellite service (RNSS), mobile-satellite service (MSS) and broadcasting-satellite service (BSS) in bands adjacent or nearby to bands allocated to the RAS.