str4500productintroduction-customer-060925.pptVIP

1、STR4500：12信道仿真器 STR4500：12信道仿真器 STR4500用于： 用于车辆跟踪与远程信息处理、民用航空、航海、人员导航、电信和宇航产品的研发或生产测试 适合于执行标准测试的生产环境 在输入商品检查或从多次测试中 生成统计数据过程中执行现场测 试 What does it do? Emulates the entire receiver operating environment RF signals from multiple satellites (GPS/SBAS) Signal dynamics associated with simulated satellite motion and simulated receiver motion on different platforms Power levels, Doppler shift Atmospheric effects Ionospheric delay, Group delay Simulated Antenna Effects Gain and Phase, Multipath System errors Orbital errors, clock errors, data bit errors Any time, any date, any place* 测试项目 Key parametric figures of merit Sensitivity : Ability to reliably track low-power signals Carrier-to-Noise ratio : A measure of how well the receiver has correlated with the coded signal Dynamic tracking : Ability to maintain signal tracking as the user’s platform rapidly moves or changes orientation Time-to-First-Fix (TTFF) : How long after a cold or warm start does it take to obtain the first position solution? Re-acquisition time (REAC) : How long does it take the receiver to track a signal again after the signal has been ‘obscured’ for a given period? Accuracy : Compared to truth in ideal conditions 2、STR4500规格 STR4500前面版 STR4500后面版 3、现场测试环境 STR4500 测试连接 4、STR4500 SimPLEX软件 STR4500命令集 STR4500 Scenarios STR4500申请Scenarios Analyze Assure Accelerate Analyze Assure Accelerate * 12信道GPS L1 C/A或SBAS信号 控制软件SimPLEX，USB接口 多种方式进行输入/输出同步 预定义的scenarios：有cars, ships, aircraft及orbiting spacecraft等模型 , 最大仿真时间为24小时。(可以从网站申请新的Scenario: http://www.positioningtechnology.co.uk/support/login.asp) 可以高重复，高动态地进行以下测试：设定doppler，power level, low phase noise, code/carrier coherence和多信道，多径环境以支持全方位测试 高低输出口：-115dbm~-150dbm, -55dbm~-90dbm 支持用户实时操作 (手工或远端，能记 录用户操作并回放) Power level Ramp on Pseudo range (TX/RX) Antenna pattern Changing scenario * Defined by scenario At scenario generation Tropospheric and Ionospheric modelling may be turned OFF (no extra delays), FIXED (fixed delay added) or MODELLE