number of bins

Discussion in 'Respiration Sensor' started by Anwar Elhadad, Oct 10, 2018.

  1. Anwar Elhadad

    Anwar Elhadad Member

    in the data sheet, it states that there are about 1536 bins per frame. However, when I am getting 1467 frame which is not a problem because I only need the first 1000 bins. Moreover, Is there a representaion of didtance using the number of bins? How many bins per meter?

    Thanks.
     
  2. NSANGOU CHOUAIBOU

    NSANGOU CHOUAIBOU Active Member

    Hi Anwar,

    Effectively, X4 xethru radar chip frame consists of 1536 RF data bins or 188 baseband complex bins for a max range ~ 9.87 m. The range accuracy is 5.14 cm and you calculate the number of bins per meter :
    100 cm / 5.14 cm ~= 20 bins
    You can use set_frame_area_offset() and frame area start value to calibrate exact 100 cm (1 meter) for an integer number of bins.

    Best regards,
    Chouaibou.
     
    Anwar Elhadad and Charlie Shao like this.