By selecting an odometer as the system's external sensor, the mathematical model for the alignment in the moving state is established and the observability of the system is analyzed.

以里程计作为外部传感器，建立了运动状态下初始对准的数学模型，分析了系统状态的可观测性，并进行了仿真研究。

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Shuttle program managers made the decision at 7:24 a.m. EST after a failure occurred in a fuel sensor system while Atlantis' external fuel tank was being filled.

美国东部时间商务7点24分，航天飞机项目管理人员作出了该决定，原因是因为在外部燃料箱加注燃料时，一个燃料传感器系统发生了故障。

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WebSphere Sensor Events delivers a set of event services that are available for external execution through their defined Web services interface.

WebSphere Sensor Events传送一系列的事件服务，这些服务可通过其定义的Web Services接口用于外部执行。

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"The Digits sensor doesn't rely on external infrastructure which means users are not bound to a fixed space, " said project leader David Kim.

BBC: Digits demo screenshot

The Pioneer SmartCradle for iPhones is compatible with all GPS enabled apps, including MotionX-GPS Drive and is the first of its kind to incorporate a built-in gyro sensor and accelerometer combined with an external antenna for improved GPS reception and location accuracy, even if GPS signals are limited by high rise buildings and tunnels.

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The ambient light sensor adjusts the display brightness according to the external lighting, so customers always have an excellent viewing experience.

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