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Multi-resolution FMCW radar detection method and radar implementing such a method
Multi-resolution FMCW radar detection method and radar implementing such a method
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机译:多分辨率FMCW雷达检测方法及实现该方法的雷达
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摘要
A detection method implementing an FMCW waveform is provided, the emitted waveform is formed of a recurring pattern of given period Tr covering an emission frequency band of given width B, each pattern being divided into a given number P of sub-patterns of duration Tr/P covering an excursion frequency band ΔF=B/P, the sub-patterns being mutually spaced by a frequency interval equal to ΔF. The radar performs: a first distance-compression processing operation carrying out a low-resolution distance compression at the scale of each recurring pattern on a fraction B/P of the emission band of width B corresponding to the frequency band covered by each of the sub-patterns; a Doppler processing operation on a given number N of successive recurrences so as to form P ambiguous distance-Doppler maps of low distance resolution, the maps being segmented into various speed domains; a second distance-compression processing operation of resolution that differs depending on the speed domain to which the relative speed of the target with respect to the radar belongs.
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机译:提供了一种实现FMCW波形的检测方法,该发射波形由覆盖给定宽度B的发射频带的给定周期Tr的重复图案形成,每个图案被划分为持续时间为Tr /的给定数量的子图案P。覆盖偏移频带ΔF= B / P的P,子图案彼此间隔等于ΔF的频率间隔。雷达执行:第一距离压缩处理操作,在对应于每个子覆盖的频带的,宽度为B的发射带的分数B / P上,以每个重复模式的比例执行低分辨率距离压缩。 -模式;在给定的N个连续递归上进行多普勒处理操作,以形成低距离分辨率的P个不明确的距离-多普勒图,这些图被分割成各种速度域;分辨率的第二距离压缩处理操作根据目标相对于雷达的相对速度所属的速度域而不同。
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