JAS 发表于 2024-9-21 13:28:29

已解决

本帖最后由 JAS 于 2024-9-21 16:30 编辑

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


20240921 发表于 2024-9-21 14:39:46

B题专家 发表于 2024-9-21 13:42
对原始RSSI做了预处理,sum, max,mean分别做了噪声过滤,故有效数据个数可能不一致

和、最大值、均值应该是同一次监听记录的,你要过滤就应该同一时刻丢,为什么可以分开过滤,这样数据对不齐,丢完数据的时刻也对不上怎么处理?

B题专家 发表于 2024-9-21 13:42:46

对原始RSSI做了预处理,sum, max,mean分别做了噪声过滤,故有效数据个数可能不一致

bwll 发表于 2024-9-21 14:49:23

20240921 发表于 2024-9-21 14:39
和、最大值、均值应该是同一次监听记录的,你要过滤就应该同一时刻丢,为什么可以分开过滤,这样数据对不 ...

我也想问,而且为什么有效数据个数会有400多个,60s按0.5s频率记录最多也才120,怎么会超过呢?

B题专家 发表于 2024-9-21 15:37:52

20240921 发表于 2024-9-21 14:39
和、最大值、均值应该是同一次监听记录的,你要过滤就应该同一时刻丢,为什么可以分开过滤,这样数据对不 ...

环境噪声变化快,静态测量时,某一时刻测量的RSSI无法明确知道是否是噪声。故先刻画噪声特征,用sum max mean表征,再分别过滤

B题专家 发表于 2024-9-21 15:38:43

bwll 发表于 2024-9-21 14:49
我也想问,而且为什么有效数据个数会有400多个,60s按0.5s频率记录最多也才120,怎么会超过呢?

有些测试里采用了更小的采样间隔,如0.2s,故数据量多

hexuan0502 发表于 2024-9-21 16:11:00

B题专家 发表于 2024-9-21 15:37
环境噪声变化快,静态测量时,某一时刻测量的RSSI无法明确知道是否是噪声。故先刻画噪声特征,用sum max...

所以实际上在过滤噪声之前,sum max mean 三个值应该是一一对应的同一时刻的三个结果吧;然后从三个结果中分别去过滤其认为是噪声的数,但是这样过滤之后导致三个值个数不一样,无法确定时刻对应关系了吧,是这样理解吗?

B题专家 发表于 2024-9-21 18:27:18

hexuan0502 发表于 2024-9-21 16:11
所以实际上在过滤噪声之前,sum max mean 三个值应该是一一对应的同一时刻的三个结果吧;然后从三个结果 ...

可以这么理解

zz07 发表于 2024-9-22 14:21:22

B题专家 发表于 2024-9-21 18:27
可以这么理解

所以赛题给出的数据是已经进行过噪声过滤的?
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