飞行时间技术的确切原理是什么？

大部分信息都在
http://www.st.com/content/ccc/resource/technical/document/datasheet/group3/b2/1e/33/77/c6/92/47/6b/DM00279086/files/DM00279086.pdf/jcr：内容/翻译/ en.DM00279086.pdf
：来自垂直激光器的红外脉冲的爆发以锥形立体角发射。
如果存在物体，则反射光束将被雪崩照片diod感测到。
通过测量从发射到接收光脉冲所花费的时间来计算距离。
每皮秒0.299792毫米==＆gt; 1mm对应于~3 ps时间粒度实现



以下为原文




Most of the information is in the
http://www.st.com/content/ccc/resource/technical/document/datasheet/group3/b2/1e/33/77/c6/92/47/6b/DM00279086/files/DM00279086.pdf/jcr:content/translations/en.DM00279086.pdf
:Burst of infrared pulses from vertical laser is emitted in a cone shaped solid angle.
If there is an object, the reflected light beam will be sensed by the avalanche photo diod.
The distance is calculated by mesuring the time it took from emission to reception of a light pulse.
0.299792 mm per picosecond ==> 1mm correspond to ~3 ps time granularity implementation

还有一个关于校准的疑问。偏移校准是在任何特定的测距模式下完成的，例如长距离，高精度和高速吗？



以下为原文




And also one more doubt on Calibration. Is offset calibration done in any specific ranging mode such as long range, high accuracy and high speed?