Frame Waveform Configuration

A frame consists of a certain number of chirps and timing parameters between frames.

 

 

.

 

 

 

 

1. Frame Waveform Timing Parameter

The T_NOP interval is closely related to low-power modes of the radar SoC.

Standard Power SoC → Both the RF and baseband domains are turned off in T_NOP.

Low Power SoC →  RF and baseband power off in T_2PD and all the other possible blocks are turned off in T_PD .

 

T_PD = T_NOP – 2 x T_2PD

 

 

 

 

 

2. Overall Frame Cycle

The overall frame cycle is shown in the figure below.

 

 

 

 

32 Chirps

T_CHIRP = 1,000 us = 1ms

T_PRE=20us

T_NOP=76uS

T_2PD=22uS

T_PD= 76 – 2*22 = 32us

Frame Cycle =  T_PRE + N x T_CHIRP + T_NOP = 20 us + 32 x 1 ms + 76 us = 32.096 ms

Duty Ratio = [ T_FRAME / (T_FRAME+T_NOP) ] * 100 =  [ 32.096 / (0.076+32.096) ] * 100 =  99.76 %