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espressif / esp-csi

Applications based on Wi-Fi CSI (Channel state information), such as indoor positioning, human detection
Apache License 2.0
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关于相位信息 (AEGHB-607) #170

Open Worange12 opened 7 months ago

Worange12 commented 7 months ago

所得到的csv文件中data中的数据格式是单数列为实数，双数列为虚数吗？如果是的也就意味着板载WiFi天线也能得到相位信息是吗？ ESP32-S3能否外接更多的天线来得到更多子载波信息？

MacChu0315-Espressif commented 7 months ago

The singular column is the imaginary part, and the even column is the real part; Phase information can be obtained; At the same time, CSI data can only be obtained from frames collected from one antenna.

Worange12 commented 7 months ago

The singular column is the imaginary part, and the even column is the real part; Phase information can be obtained; At the same time, CSI data can only be obtained from frames collected from one antenna.

感谢您解惑。这是否意味着我无法得到相位差信息了，因为相位差似乎需要至少两根天线，而esp32-s3只有板载天线。

MacChu0315-Espressif commented 7 months ago

If you can get the phase of the sending device, that's OK. You can't get a phase difference on a single development board.

Worange12 commented 7 months ago

If you can get the phase of the sending device, that's OK. You can't get a phase difference on a single development board.

好的，非常感谢

Worange12 commented 7 months ago

If you can get the phase of the sending device, that's OK. You can't get a phase difference on a single development board.

e......最后一个问题，抱歉打扰您这么久。如果是直接连路由器的话我可以怎么做来获取发送方的相位信息呢。如果使用两个esp32是不是就可以得到发送方和接收方的相位信息了。