关于mmwave_dfp_02中mmWaveLink_Cascade_Example例程的一些疑问

1.在参数配置文件《mmwaveconfig》中包含多个设置调频斜率等参数的语句，请问真正起作用的是哪一块？

#
#Profile config parameters, please modify if needed.
#rlProfileCfg_t
#
profileId=1;
pfVcoSelect=2;
startFreqConst=1439117143;
idleTimeConst=1000;
adcStartTimeConst=700;
rampEndTime=6000;
txOutPowerBackoffCode=0;
txPhaseShifter=0;
freqSlopeConst=621;
txStartTime=0;
numAdcSamples=256;
digOutSampleRate=10000;
hpfCornerFreq1=0;
hpfCornerFreq2=0;
rxGain=30;
#END

#
#Profile config parameters, please modify if needed.
#rlProfileCfg_t
#
profileId=2;
pfVcoSelect=2;
startFreqConst=1439117143;
idleTimeConst=1000;
adcStartTimeConst=800;
rampEndTime=6000;
txOutPowerBackoffCode=0;
txPhaseShifter=0;
freqSlopeConst=621;
txStartTime=0;
numAdcSamples=256;
digOutSampleRate=10000;
hpfCornerFreq1=0;
hpfCornerFreq2=0;
rxGain=30;
#END

2.请问“startFreqConst=1439117143”和“freqSlopeConst=621”对应的以GHz和MHz/us为单位的值为多少，应该如何计算？

3.“AdvChirpLUT_FreqSlopeConfig_Data1=-0.050”与“freqSlopeConst=621”中的slope有什么区别？