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首页> 外文会议>Proceedings of the 22nd international technical meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2009) >Navigation Simulation Options for Ground Testing of Installed Systems
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Navigation Simulation Options for Ground Testing of Installed Systems

机译：用于已安装系统的地面测试的导航模拟选项

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Today′s military aircraft are increasingly dependent on the use of advanced technology weapons systems sensor systems to satisfy the growing complexities and diverse roles of multi-mission air warfare.Consequently,installed weapons systems sensor testing requires simultaneous, and correlated,ground-based T&E on a variety of installed multi-spectrum sensor configurations with integrated avionics systems and subsystems.Installed systems T&E cost effectively optimize the use of scarce flight testing resources while also satisfying increasingly sophisticated tests.It is now an accepted and highly cost- effective practice to first conduct rigorous ground testing and evaluation of the installed/integrated sensors′ performance,and interaction to determine their readiness for range and/or flight-testing.In particular,interference in navigation systems creates a safety-of-life issue even under the best of conditions.Also,loss of communications or Radar systems during flight testing could be disastrous.One method of risk reduction is the ground testing of fully installed systems before the first flight.At NAVAIR′s Integrated Battlespace Simulation and Test(IBST)Department′s Air Combat Environment Test and Evaluation Facility(ACETEF),engineers create an environment on the ground to simulate flight through a noisy environment. rnAt ACETEF,there are three options for integrated navigation during ground testing all of which are compatible with the Joint Integrated Mission Model (JIMM).JIMM can control a number of simulators and stimulators for integrated testing.For simple static scenarios,a live feed signal can be reradiated to the system under test.For testing that requires a location other than the test facility or dynamic testing either simulation,stimulation,or a combination of the two. rnIn order to simulate GPS and INS,the navigation system is disengaged and a program used to directly input navigation data onto the data bus based on the scenario running in JIMM.To stimulate the navigation system,a GPS and INS simulator is used for dynamic inputs simulating the constellation visible at any time or place.If the navigation system is not under test,but other systems need GPS RF input for timing,simulation and stimulation is combined. rnIBST′s large anechoic chamber allows engineers to place large aircraft,up to the size of a Boeing 707,or two tactical aircraft in a secure environment in which to radiate.Adjacent to the large anechoic chamber is the Operation Control Center(OCC)which together with the chamber can be controlled for security purposes.Within the OCC,testing is controlled and monitored.A number of stimulators are controlled independently or in a coherent scenario using JIMM.Unlike in-flight testing, scenarios are repeatable to verify results and give apples- to-apples comparisons. rnIn addition to the large anechoic chamber,IBST has another smaller anechoic chamber that is 100′x 60′x 40′ allowing testing of installed systems in smaller vehicles. The smaller chamber easily accommodates a single tactical aircraft,helicopter,or truck.JIMM and all of the command and control equipment used in the large chamber are available for use in the smaller chamber. rnIf an anechoic chamber is not needed,testing is performed in either our shielded hangar or shielded labs,in the case of small craft such as UAVs or bench testing of individual systems or subsystems.There is also the option of performing open air testing in front of the shielded hangar.Obviously,as one moves into less shielded environments certain restrictions apply to the available signals.But in all cases,prescripted coherent scenarios or stand alone simulation control can be used. rnIn addition to the navigation options available the customer may choose from a number of signals depending on the specifics of the test requirements.
机译：当今的军用飞机越来越依赖于使用先进技术的武器系统传感器系统来满足多任务空战日益增长的复杂性和多样化作用。因此，已安装的武器系统传感器测试需要同时进行相关的地面T＆E集成了航空电子系统和子系统的各种已安装的多光谱传感器配置。已安装的系统T＆E可以经济高效地优化稀缺飞行测试资源的使用，同时还可以满足日益复杂的测试需求。对安装/集成的传感器的性能进行严格的地面测试和评估，并进行交互以确定它们是否准备进行范围和/或飞行测试。特别是导航系统的干扰即使在最佳情况下也存在生命安全问题此外，在飞行测试过程中可能会损失通讯或雷达系统降低风险的一种方法是在第一次飞行之前对完整安装的系统进行地面测试。在NAVAIR的综合战场模拟与测试（IBST）部门的空战环境测试与评估设施（ACETEF）中，工程师创造了一个环境在地面上模拟在嘈杂环境中的飞行。 rn在ACETEF，地面测试期间提供三种用于集成导航的选项，所有这些选项均与联合集成任务模型（JIMM）兼容。JIMM可以控制许多用于集成测试的模拟器和激励器。对于简单的静态场景，实时馈电信号可以辐射到被测系统。对于需要除测试设施以外的位置的测试或模拟，刺激或两者结合的动态测试。 rn为了模拟GPS和INS，分离了导航系统，并根据JIMM中运行的场景，使用了一个程序将导航数据直接输入到数据总线上。为刺激导航系统，使用GPS和INS模拟器进行动态输入可以在任何时间，任何地点模拟可见的星座。如果未对导航系统进行测试，则其他系统需要GPS RF输入以进行计时，模拟和刺激相结合。 rnIBST的大型消声室可让工程师将波音707型的大型飞机或两架战术飞机放置在可辐射的安全环境中。与大型消声室相邻的是作战控制中心（OCC），出于安全目的，可以与腔室一起进行控制。在OCC内，可以控制和监视测试。使用JIMM可以独立或在连贯的场景中控制许多刺激器。与飞行中的测试不同，场景可以重复以验证结果并给出苹果对苹果的比较。 rn除了大型消声室外，IBST还具有另一个较小的消声室，即100'x 60'x 40'，可以测试较小车辆中已安装的系统。较小的战场可轻松容纳一架战术飞机，直升机或卡车。JIMM和在大型战场中使用的所有指挥和控制设备都可用于较小的战场。 rn如果不需要消声室，则可以在我们的带屏蔽的机库或带屏蔽的实验室中进行测试，对于小型飞行器（例如无人机）或单个系统或子系统的台式测试，也可以在前面进行露天测试显然，随着人们进入较少屏蔽的环境，对可用信号施加了一些限制。但是在所有情况下，都可以使用规定的相干场景或独立的仿真控制。 rn除了可用的导航选项外，客户还可以根据测试要求的具体情况从多种信号中进行选择。

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