Asynchronous tracking: in this method, there is an external process that runs and scans for changes.

异步跟踪：在这种方法中，将运行外部进程来扫描更改。

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Variable sampling rate tracking, which is based on nets or grids multi-sensor asynchronous fusion tracking, is an important operating modes in phased array radar.

变采样率跟踪是相控阵雷达的一种重要工作模式，是基于网络或栅格多传感器异步融合跟踪的基础。

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During trajectory-tracking photographic measurement, on occasion comes forth the problem that the tracking stations time is asynchronous, so the data cant be put into usual processing.

弹道摄影测量中，有时出现两个观测站的测量数据时间不同步的现象，此时数据不能用于正常处理。

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