HI,  CH Cho:

What is the difference between red and blue curve?  Are they exactly based on the same data? 

Please give more details.  

Best,

Zigang

Blue is the graph where we unwraped the bin's img and real values.

Red is unwraped from mmwave firmware.

The two data are from the exactly same bin and same time.

Picture 1 is after unwrapping with the python code.(blue)

Picture 2 is the picture that flipped the unwrapping data.(blue)

Picture 3 normalizes the two data.

Sorry, I still do not understand.  Can you explain with details?  How the data is obtains and what kinds of process is used?

what is unwrap mean in your sentence below? what is the bin? raw ADC data?

Blue is the graph where we unwraped the bin's img and real values.

Best,

Zigang

I converted the unwrap function of Vital signs lab to Python code.

float unwrap(float phase, float phasePrev, float *diffPhaseCorrectionCum)
{
	float modFactorF;
	float diffPhase;
	float diffPhaseMod;
	float diffPhaseCorrection;
	float phaseOut;

	// incremental phase variation
	diffPhase = phase - phasePrev;

	if (diffPhase > PI)
		modFactorF = 1;
	else if (diffPhase < - PI)
	    modFactorF = -1;
	else
		modFactorF = 0;

	diffPhaseMod = diffPhase - modFactorF*2*PI;

	// preserve variation sign for +pi vs. -pi
	if ((diffPhaseMod == -PI) && (diffPhase > 0))
		diffPhaseMod = PI;

	// incremental phase correction
	diffPhaseCorrection = diffPhaseMod - diffPhase;

	// Ignore correction when incremental variation is smaller than cutoff
	if (((diffPhaseCorrection < PI) && (diffPhaseCorrection>0)) ||
			((diffPhaseCorrection > -PI) && (diffPhaseCorrection<0)))
		diffPhaseCorrection = 0;

	// Find cumulative sum of deltas
	*diffPhaseCorrectionCum = *diffPhaseCorrectionCum + diffPhaseCorrection;
	phaseOut = phase + *diffPhaseCorrectionCum;
    return phaseOut;
 }

And only one range-bin was measured by Vital signs lab.

The red line is unwrapPhasePeak_mm sent by mmwave.

The blue line unwarped the Range-bin's img and real values using the unwrap function we converted to Python code.

Because only one range-bin is enabled, two data(img and real values, unwrapPhasePeak_mm) are from the same range-bin.

Best regards

CH Cho.