In the end, we conduct a preliminary study on detection of targets with nonconstant acceleration. The new Doppler-time formula are derived and its influence on detection and imaging is analyzed.

论文最后初步研究了地面非匀加速运动目标的检测问题，推导了其多普勒-时间变化关系，分析了其成对检测和成像的影响。

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The study on shot transition detection is an active research field in video analysis and retrieval.

镜头检测算法的研究是视频分析与检索中较为活跃的研究领域之一。

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Finally after the study on the emitter signal detection and feature extraction technology, the system model on complex emitter reconnaissance and processing technology was given.

最后结合辐射源信号检测和特征提取技术的研究，建立了复杂辐射源信号侦察处理技术系统模型。

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Black holes are notoriously difficult to study, since so much in astronomy depends on the detection of light - and within a certain distance from a black hole, even that cannot escape.

BBC: First glimpse of a black hole's spin

It is also possible that a proportion of girls with mild autistic traits lose those traits early on and so escape detection by 8 years of age (the age of the children in the CDC study).

CNN: How girls and boys differ when it comes to autism