1 | Multiple peak flag |

2 | Envelope length |

3 | Envelope area |

4 | Envelope mean |

5 | Envelope variance |

6 | Envelope skewness |

7 | Envelope kurtosis |

8 | Area in frequency domain |

9 | Mean in frequency domain |

10 | Variance in frequency domain |

11 | Skewness in frequency domain |

12 | Kurtosis in frequency domain |

13 | Ratio of peak to distance |

14 | Ratio of peak to CFAR threshold |

15 | Slope of second envelop |

16 | Ratio of mean to distance |

17 | Ratio of variance to distance |

18 | Ratio of skewness to distance |

19 | Ratio of kurtosis to distance |

20 | Ratio of peak to CFAR threshold with distance |

21 | First peak value in frequency domain |

22 | First peak index in frequency domain |

23 | Second peak value in frequency domain |

24 | Second peak index in frequency domain |

25 | Ratio of first peak value to distance in frequency domain |

26 | Ratio of second peak value in frequency domain |

27 | Ratio of first peak index to distance in frequency domain |

28 | Ratio of second peak value to distance in frequency domain |