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IWR1642BOOST: Level_Sensing demo测试距离问题求助

Part Number: IWR1642BOOST
Other Parts Discussed in Thread: IWR1642, IWR1443, IWRL1432

IWR1642的Level_Sensing这个demo测试距离时:如果放置开发板在窄通道(漏斗形)入口外(正常到墙直线距离为10m),测的的数据只有1.4m,FFT图可以看出是把入口处的墙识别成了最远距离,有没有办法软件修改让传感器识别到正确的最远距离或者使雷达波不那么发散?还是智能硬件修改天线布局使雷达波角度更小?

 (改图为示意图)

.cfg配置参数
dfeDataOutputMode 1
channelCfg 8 1 0
adcCfg 2 1
adcbufCfg 0 1 1 1
profileCfg 0 77 7 7 114.4 0 0 34.7 5 512 5000 0 0 48
chirpCfg 0 0 0 0 0 0 0 1
frameCfg 0 0 2 0 500 1 0
lowPower 0 1
guiMonitor 1 1 0 0 0 0
RangeLimitCfg 2 1 0.3 30.0
sensorStart