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IWR6843ISK: which FOV is correct?

Nicolas Wolf
Prodigy 120 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: TIDEP-01000

Hello there,

I'm using the IWR6843ISK with the People Counting Lab.

Could you please help me with the FOV of the IWR6843ISK, because I found three different information.

Source 1: 

http://dev.ti.com/tirex/explore/node?node=AKu-aTm5FIcxlwZJU1pLBw__VLyFKFf__LATEST

Azimuth: +-55

Elevation: +- 20

Source 2:

TIDEP-01000 People Tracking and Counting Reference Design Using mmWave Radar Sensor

FOV: 120° horizontal, 30° vertical

Source 3:

http://www.ti.com/tool/IWR6843ISK

4 receive (RX) 3 transmit (TX) antenna with 108° azimuth field of view (FoV) and 44° elevation FoV

Thank you in advance!

Nicolas

  • 0
    TI__Mastermind 28055 points

    Hi Nicholas,

    The general definition for FOV is the point where the gain is 12 dB below the peak. On ISK this is +-54 - 55 degrees, so that is where the 108 and +-55 numbers come from.

    The people counting demo scans across 120 degrees in azimuth, and at short range, the gain is high enough in this FOV to detect people. So for this demo, the effective FOV is 120 degrees in azimuth.

    Generally, the elevation FOV of the ISK is about +-20 degrees (40 degrees total). 

    FOV is an inexact number as it changes with range.

    Regards,

    Justin

  • 0 in reply to Justin Curewitz
    Prodigy 120 points

    Hello Justin,

    thanks a lot for your fast help!