SizhongStandaloneGNSSOTATestSolution思眾科技獨(dú)家GNSS測(cè)試簡(jiǎn)介2007年成立于深圳投資方：香港思眾主營(yíng)業(yè)務(wù)：思眾品牌1、GNSSOTA測(cè)試系統(tǒng)2、RF屏蔽箱（手動(dòng)、氣動(dòng)）可定制3、RF屏蔽房、電波暗室、EMC暗室4、無(wú)線射頻模塊評(píng)估系統(tǒng)5、手機(jī)信號(hào)衰落仿真器6、射頻矩陣系統(tǒng)代理產(chǎn)品1、Spirent思博倫全線產(chǎn)品（七年代理）2、安立全線測(cè)試產(chǎn)品3、R/S全線測(cè)試產(chǎn)品思眾典型用戶獨(dú)立的全球?qū)Ш叫l(wèi)星系統(tǒng)的OTA測(cè)試方法AwaytomeasuretheTotalIsotropicSensitivity(TIS)oftheDUTasawhole:3DPatternMeasurement+LinearizationSinglePointSensitivitySearchCalculationofTISEstimateEssentiallythesametestforGPS,GLONASSandBeidoudevicesGNSSOTATESTINGTIS–TotalIsotropicSensitivity總?cè)蜢`敏度Alsocalled“sphericaleffectiveradiatedreceiversensitivity球有效輻射接收機(jī)靈敏度”TeststhesensitivityoftheGNSSreceiverasafunctionofspatialorientation典型GPS接收機(jī)測(cè)試項(xiàng)目首次定位時(shí)間TTFF冷啟動(dòng)、暖啟動(dòng)、熱啟動(dòng)靈敏度捕獲靈敏度跟蹤靈敏度定位準(zhǔn)確度相對(duì)及絕對(duì)準(zhǔn)確度移動(dòng)GPS接收機(jī)準(zhǔn)確度衛(wèi)星跟蹤準(zhǔn)確度GPS信號(hào)仿真多星信號(hào)（多達(dá)12顆星）多路GPS信道靜態(tài)及動(dòng)態(tài)場(chǎng)景場(chǎng)景信號(hào)產(chǎn)生能力AWGN信號(hào)產(chǎn)生干擾多經(jīng)信號(hào)多普勒功率衰減電離層及對(duì)流層影響GNSSOTATESTINGCustomizenumberofmeasurementsandanglesofeachmeasurement,oneateachcombinationof:=n*(xxangle)°,wheren=1throughnumberofcusotmized=n*(xxangle)°,wheren=0throughnumberofcustomizedGNSSOTATESTINGisusuallyadjustedwithaturntableTheadjustmentmaybedonewithamovableantenna,anantennaarray,oramovingarmholdingtheDUTGNSSOTATESTINGTestingisdonewithbothhorizontalandverticalpolarizationofthesignalGNSSOTA解決方案架構(gòu)STANDARD3000暗室系統(tǒng)STANDARD3000微波暗室天線測(cè)量系統(tǒng)是一套基于遠(yuǎn)場(chǎng)測(cè)試?yán)碚?，集成?shù)據(jù)獲取，數(shù)據(jù)處理和數(shù)據(jù)的可視化變換的自動(dòng)化測(cè)試系統(tǒng)?？梢灾С譄o(wú)源測(cè)試和有源方式的多種制式的通信系統(tǒng)終端測(cè)試，主要工作頻率為700MHz~6GHz.

整個(gè)測(cè)試系統(tǒng)由主要由微波暗室，測(cè)試儀器，轉(zhuǎn)臺(tái)及控制系統(tǒng)組成，微波暗室實(shí)現(xiàn)遠(yuǎn)場(chǎng)測(cè)試及無(wú)回波空間的模擬，測(cè)試儀器用來(lái)實(shí)現(xiàn)相關(guān)射頻參數(shù)的測(cè)量，轉(zhuǎn)臺(tái)主要承載待測(cè)物體做二維或三維轉(zhuǎn)動(dòng)，控制系統(tǒng)以計(jì)算機(jī)為中心實(shí)現(xiàn)對(duì)測(cè)試儀器和轉(zhuǎn)臺(tái)的控制從而實(shí)現(xiàn)自動(dòng)化測(cè)試的目的。STANDARD3000暗室系統(tǒng)建設(shè)中建成后STANDARD3000暗室系統(tǒng)通風(fēng)波導(dǎo)窗濾波器天線及轉(zhuǎn)臺(tái)配套儀器GSS6700Multi-GNSSSimulatorGNSSOTA測(cè)試結(jié)