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SECOND-ORDER DETECTION METHOD AND SYSTEM FOR RANGING APPLICATIONS
SECOND-ORDER DETECTION METHOD AND SYSTEM FOR RANGING APPLICATIONS
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机译:测距应用的二阶检测方法和系统
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摘要
A method and system for detecting and ranging targets within a scene are provided. The method can include emitting an emission signal onto the scene and receiving a return signal including echoes produced by reflection of the emission signal from the targets. The method can also include digitizing the return signal into a digital signal waveform including N real- valued samples representing the return signal at N sequential sampling times. The method can further include creating, from the digital signal waveform, an N×N second-order signal matrix having a main diagonal whose nth element is expressed in terms of the square of the nth sample of the digital signal waveform. The method can also include deriving, based on the signal matrix, time-of-flight information associated with the echoes and indicative of range information associated with the targets. The method and system can be used, for example, in lidar-based remote sensing applications.
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机译:提供了一种用于在场景内检测和测距目标的方法和系统。该方法可以包括:将发射信号发射到场景上;以及接收包括通过反射来自目标的发射信号而产生的回声的返回信号。该方法还可以包括将返回信号数字化为数字信号波形,该数字信号波形包括表示在 N I>个顺序采样时间处的返回信号的 N I>个实值样本。该方法可以进一步包括从数字信号波形创建具有主对角线的 N I> x N I> N阶二阶信号矩阵,该主对角线的 n I> < Sup> th Sup>元素以数字信号波形的 n I> Sup>样本的平方表示。该方法还可以包括基于信号矩阵,得出与回波相关联的飞行时间信息,并指示与目标相关联的距离信息。该方法和系统可以例如在基于激光雷达的遥感应用中使用。
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