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EttusResearch / gr-doa

Direction-of-Arrival (DoA) Demo for GNU Radio (OOT) with the USRP™ X-Series and TwinRX™
GNU General Public License v3.0
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Relative Phase Offset Estimation and Correction #14

Open SpongeBobaa opened 1 year ago

SpongeBobaa commented 1 year ago

I did phase correction according to the instructions on the wiki. But I got the following results.

1

It looks like my channel B is not working. Is this my X310 problem? How should I solve this problem?

SpongeBobaa commented 1 year ago

I have received the following display. Did the warning affect my results?

[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; UHD_3.15.0.HEAD-0-gaea0e2de [INFO] [X300] X300 initialization sequence... [INFO] [X300] Maximum frame size: 1472 bytes. [INFO] [X300] Radio 1x clock: 200 MHz [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000) [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1302 MB/s) [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1317 MB/s) [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001) [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001) [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000) [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000) [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000) [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000) [WARNING] [X300] Cannot update master clock rate! X300 Series does not allow changing the clock rate during runtime. [INFO] [MULTI_USRP] 1) catch time transition at pps edge [INFO] [MULTI_USRP] 2) set times next pps (synchronously) [WARNING] [MULTI_USRP] At least one channel is using an external LO.Using a manual DSP frequency policy is recommended to ensure the same frequency shift on all channels.

michaelld commented 1 year ago

OK so this is related to https://github.com/EttusResearch/uhd/issues/675 ... yes? Let's go to email for this discussion ... but, yes that WARNING seems significant ... I meanyou have 2x TwinRX & if they are not properly sharing LO then that's going to cause issues!