| 摘要 |
The invention provides a method and apparatus for monitoring a moving object, the method comprising: emitting electromagnetic radiation so that the object passes through the electromagnetic radiation; detecting a plurality of reflection events, each comprising a reflection of the electromagnetic radiation from the object; determining a direction of each of the reflection events from the direction of emission of the electromagnetic radiation or from the direction of detection of the respective reflection event; and determining the relative timing of the reflection events; wherein information pertaining to the object can be determined, the information comprising any one or more of a speed, a location and a direction of the object.
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