AWR2243BOOST: 请问如何使用mmwave studio进行RX calibration

nana akami

Part Number: AWR2243BOOST

我使用AWR2243BOOST+DCA1000采集radar数据，在一个空旷场地测一个角反射器。

使用我自己的脚本读取bin文件，并进行rangefft和doppler fft后， range-doppler情况符合预期。但是当我提取出在角反射器位置的数据的相位情况，如下图所示，发现RX2相比RX0 RX1 RX3相位会有个固定的偏移，不符合“相位周期性变化”的预期。虽然对着当前信号做anglefft也能得到大致正确的角度位置，这个偏移可能会影响最终求角度的精度

下图纵坐标是相位，横坐标是0-12，分别是使用MIMO-TDM后 [ TX0-RX0 , TX0-RX1 , TX0-RX2 , TX0-RX3 , TX1-RX0 , TX1-RX1 , TX1-RX2 , TX1-RX3 , TX2-RX0 , TX2-RX1 , TX2-RX2 , TX2-RX3 ]

我再测了另外几组也是类似的规律。

经过搜索后我查到有个东西叫RX calibration。但我没查到如何在mmwave studio上做这件事。

1 年多前

0 Cherry Zhou 1 年多前

TI__Guru* 81380 points

您好，我们已收到您的问题并升级到英文论坛寻求帮助，如有答复将尽快回复您。谢谢！

0 Cherry Zhou 1 年多前回复 Cherry Zhou

TI__Guru* 81380 points

您好，

能否请您提供以下信息：

1. 请问在您给出的图中，y 轴是以什么单位(度数或弧度)表示的？

2. Rx gain calibration并无法帮助解决上面的相位问题。

3. 该问题也有可能是由于天线电平不匹配造成的。您能否提供有关天线放置和对齐的更多信息？

0 nana akami 1 年多前回复 Cherry Zhou

Prodigy 20 points

您好，非常感谢您的回复。

1. 我的y轴是弧度表示。

2. 请问为啥“Rx gain calibration并无法帮助解决上面的相位问题”。

3. 我就是使用awr2243boost single chip。天线排列应该是固定的。同时我也没做啥特殊处理，就是简单修改了一下mmstudio中给的 DataCaptureDemo_xWR.lua，并改成支持MIMO的模式。

-- All the parameters used in this script are default parameters used in the mmWaveStudio GUI.
-- It captures the ADC data using DCA1000.
-- The user is expected to change the configuration according to specific use-cases.
-- Change "operating_mode" in line 15 based on the usecase

--BSS and MSS firmware download
info = debug.getinfo(1,'S');
file_path = (info.source);
file_path = string.gsub(file_path, "@","");
file_path = string.gsub(file_path, "DataCaptureDemo_xWR_TDM.lua","");
fw_path   = file_path.."..\\..\\rf_eval_firmware"

--Mode of operation.
--Legacy Framing mode = 0/Advanced framing mode = 1/Continous streaming mode = 2
operating_mode = 0

--Export bit operation file
bitopfile = file_path.."\\".."bitoperations.lua"
dofile(bitopfile)

--Read part ID
--This register address used to find part number
res, efusedevice = ar1.ReadRegister(0xFFFFE214, 0, 31)
efuseES2ES3Device = bit_and(efusedevice, 0x03FC0000)
efuseES2ES3Device = bit_rshift(efuseES2ES3Device, 18)

if(efuseES2ES3Device == 0x30 or efuseES2ES3Device == 0x6) then
	partId = 2243E0
elseif(efuseES2ES3Device == 0x31 or efuseES2ES3Device == 0x32) then
	partId = 2243E1
else
	WriteToLog("Invalid Device part number\n" ..partId)
end 

--ES version
res, ESVersion = ar1.ReadRegister(0xFFFFE218, 0, 31)
ESVersion = bit_and(ESVersion, 15)

--ADC_Data file path
data_path     = file_path.."..\\PostProc"
adc_data_path = data_path.."\\adc_data.bin"

-- Download Firmware
if(partId == 2243E0) then
    BSS_FW    = fw_path.."\\AWR2243_ES1_0\\radarss\\xwr22xx_radarss.bin"
    MSS_FW    = fw_path.."\\AWR2243_ES1_0\\masterss\\xwr22xx_masterss.bin"
elseif(partId == 2243E1) then
    BSS_FW    = fw_path.."\\AWR2243_ES1_1\\radarss\\xwr22xx_radarss.bin"
    MSS_FW    = fw_path.."\\AWR2243_ES1_1\\masterss\\xwr22xx_masterss.bin"
else
    WriteToLog("Invalid Device partId FW\n" ..partId)
    WriteToLog("Invalid Device ESVersion\n" ..ESVersion)
end

-- Download BSS Firmware
if (ar1.DownloadBSSFw(BSS_FW) == 0) then
    WriteToLog("BSS FW Download Success\n", "green")
else
    WriteToLog("BSS FW Download failure\n", "red")
end
RSTD.Sleep(100)

-- Download MSS Firmware
if (ar1.DownloadMSSFw(MSS_FW) == 0) then
    WriteToLog("MSS FW Download Success\n", "green")
else
    WriteToLog("MSS FW Download failure\n", "red")
end
RSTD.Sleep(100)

-- SPI Connect
if (ar1.PowerOn(1, 1000, 0, 0) == 0) then
    WriteToLog("Power On Success\n", "green")
else
   WriteToLog("Power On failure\n", "red")
end
RSTD.Sleep(100)

-- RF Power UP
if (ar1.RfEnable() == 0) then
    WriteToLog("RF Enable Success\n", "green")
else
    WriteToLog("RF Enable failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.ChanNAdcConfig(1, 1, 1, 1, 1, 1, 1, 2, 1, 0) == 0) then
    WriteToLog("ChanNAdcConfig Success\n", "green")
else
    WriteToLog("ChanNAdcConfig failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.LPModConfig(0, 0) == 0) then
    WriteToLog("Regualar mode Cfg Success\n", "green")
else
    WriteToLog("Regualar mode Cfg failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.RfInit() == 0) then
    WriteToLog("RfInit Success\n", "green")
else
    WriteToLog("RfInit failure\n", "red")
end

RSTD.Sleep(1000)

if (ar1.DataPathConfig(1, 1, 0) == 0) then
    WriteToLog("DataPathConfig Success\n", "green")
else
    WriteToLog("DataPathConfig failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.LvdsClkConfig(1, 1) == 0) then
    WriteToLog("LvdsClkConfig Success\n", "green")
else
    WriteToLog("LvdsClkConfig failure\n", "red")
end
RSTD.Sleep(100)

if (ar1.LVDSLaneConfig(0, 1, 1, 1, 1, 1, 0, 0) == 0) then
    WriteToLog("LVDSLaneConfig Success\n", "green")
else
    WriteToLog("LVDSLaneConfig failure\n", "red")
end
RSTD.Sleep(100)

if((operating_mode == 0) or (operating_mode == 1)) then
    if(ar1.ProfileConfig(0, 77, 6, 6, 32, 0, 0, 0, 0, 0, 0, 29.982, 0, 256, 10000, 0, 0, 94) == 0) then
        WriteToLog("ProfileConfig Success\n", "green")
    else
        WriteToLog("ProfileConfig failure\n", "red")
    end
    RSTD.Sleep(100)

    if (ar1.ChirpConfig(0, 0, 0, 0, 0, 0, 0, 1, 0, 0)== 0) then
        WriteToLog("ChirpConfig Success\n", "green")
    else
        WriteToLog("ChirpConfig failure\n", "red")
    end

    
    if (ar1.ChirpConfig(1, 1, 0, 0, 0, 0, 0, 0, 1, 0) == 0) then
        WriteToLog("ChirpConfig Success\n", "green")
    else
        WriteToLog("ChirpConfig failure\n", "red")
    end

    
    if (ar1.ChirpConfig(2, 2, 0, 0, 0, 0, 0, 0, 0, 1) == 0) then
        WriteToLog("ChirpConfig Success\n", "green")
    else
        WriteToLog("ChirpConfig failure\n", "red")
    end
end
RSTD.Sleep(100)

if(operating_mode == 0) then
    if (ar1.FrameConfig(0, 2, 1, 128, 30, 0, 1) == 0) then
        WriteToLog("FrameConfig Success\n", "green")
    else
        WriteToLog("FrameConfig failure\n", "red")
    end
elseif(operating_mode == 1) then
    if (ar1.AdvanceFrameConfig(4, 1536, 0, 0, 1, 128, 8000000, 0, 1, 1, 8000000, 0, 0, 1, 128, 8000000, 0,1, 1, 8000000, 0, 0, 1, 128, 8000000, 0, 1, 1, 8000000, 0, 0, 1, 128,8000000, 0, 1, 1, 8000000, 8, 1, 0, 1, 128, 0, 1, 128, 1, 1, 128,1, 1, 128, 1, 1) == 0) then
        WriteToLog("AdvanceFrameConfig Success\n", "green")
    else
        WriteToLog("AdvanceFrameConfig failure\n", "red")
    end
end
RSTD.Sleep(100)

-- select Device type
if (ar1.SelectCaptureDevice("DCA1000") == 0) then
    WriteToLog("SelectCaptureDevice Success\n", "green")
else
    WriteToLog("SelectCaptureDevice failure\n", "red")
end

--DATA CAPTURE CARD API
if (ar1.CaptureCardConfig_EthInit("192.168.33.30", "192.168.33.180", "12:34:56:78:90:12", 4096, 4098) == 0) then
    WriteToLog("CaptureCardConfig_EthInit Success\n", "green")
else
    WriteToLog("CaptureCardConfig_EthInit failure\n", "red")
end

if (ar1.CaptureCardConfig_Mode(1, 1, 1, 2, 3, 30) == 0) then
    WriteToLog("CaptureCardConfig_Mode Success\n", "green")
else
    WriteToLog("CaptureCardConfig_Mode failure\n", "red")
end

if (ar1.CaptureCardConfig_PacketDelay(25) == 0) then
    WriteToLog("CaptureCardConfig_PacketDelay Success\n", "green")
else
    WriteToLog("CaptureCardConfig_PacketDelay failure\n", "red")
end

if((operating_mode == 0) or (operating_mode == 1)) then

    --Start Record ADC data
    ar1.CaptureCardConfig_StartRecord(adc_data_path, 1)
    RSTD.Sleep(2000)
    
    --Trigger frame
    ar1.StartFrame()
    RSTD.Sleep(10000)
    
    --Post process the Capture RAW ADC data
    ar1.StartMatlabPostProc(adc_data_path)
    WriteToLog("Please wait for a few seconds for matlab post processing .....!!!! \n", "green")
    RSTD.Sleep(10000)
    
else --Continuous streaming 

    if(ar1.ContStrConfig(77, 9000, 94, 0, 0, 0, 0, 0, 0, 0, 0) == 0) then
        WriteToLog("ContStrConfig Success\n", "green")
    else
        WriteToLog("ContStrConfig failure\n", "red")
    end
    
    -- Start Continuous streaming of AWR device
    ar1.ContStrModEnable()

    -- Number of samples to capture
    ar1.BasicConfigurationForAnalysis(16384, 16384, 1, 0, 0, 0, 1)
    
    --Start Record continuous data
    ar1.CaptureCardConfig_StartRecord_ContinuousStreamData(adc_data_path, 0)
    RSTD.Sleep(5000)
    
    -- Stop Continuous streaming of AWR device
    ar1.ContStrModDisable()
    
    --Post process the Capture data
    ar1.ProcessContStreamADCData(adc_data_path)
    WriteToLog("Please wait for a few seconds for matlab post processing .....!!!! \n", "green")
    RSTD.Sleep(10000)
end

0 Cherry Zhou 1 年多前回复 nana akami

TI__Guru* 81380 points

我们跟进给工程师看下哈。

0 Cherry Zhou 1 年多前回复 Cherry Zhou

TI__Guru* 81380 points

抱歉回复晚了。

nana akami 说：
2. 请问为啥“Rx gain calibration并无法帮助解决上面的相位问题”。

RX 增益校准会根据 RX 增益测量的结果、温度和系统配置的 RX 增益来设置应用最佳的 RX LNA 设置和 RX IFA 设置，而且在所有4个 RX 中都是相同的。因此并不能帮助减轻 RX 之间的相位差。

nana akami 说：
3. 我就是使用awr2243boost single chip。天线排列应该是固定的。同时我也没做啥特殊处理，就是简单修改了一下mmstudio中给的 DataCaptureDemo_xWR.lua，并改成支持MIMO的模式。

您可以考虑在角度= 0时使用角反射器测量 RX0、1、2、3的相位。这样就可以找到每个 RX 的偏移量，然后在实际现场测量时校准偏移量。

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AWR2243BOOST: 请问如何使用mmwave studio进行RX calibration