TI中文支持网There are two problems:
The first is that I set the parameters on the mmwave studio software as shown in Figure 1 below. The bandwidth displayed on this interface is 1798.92 MHz, but after the data collection is completed, I pass the postproc. 0.7675GHz, the two show inconsistency. What is the reason for this and how should I change the parameters to make my bandwidth larger.
The second is that I set the parameters on the mmwave studio software. As shown in Figure 1, I think a chirp time should be 60us, but after I pass the postproc, the chirp signal duration obtained in the interface displayed in matlab is shown in Figure 3. It is 25us. This is also verified in the time domain diagram of the chirp signal I drew after analyzing the data. The result is 25us. This does not match the parameters set, how can I understand this difference.
Thank you and look forward to your reply
figure1
figure2
figure3
Annie Liu：
0.7675GHz is thebw needed for your configuration
since you are sampling 256 samples at 10000ksps sampling rate, 25.6 usec are needed. If you multiply by the Slope, you will get 0.7675GHz
Chirp duration is probably related to the same
user6148823：
回复 Annie Liu:
OK, thanks for your reply, I have two more questions:One is how can I set it up to increase bandwidthSecond, if I want to improve the ranging accuracy, how should I set the parameters?Looking forward to your reply
Annie Liu：
回复 user6148823:
I apologize for any delay in responding to you due to Chinese Lunar New Year.
You need to increase the number of samples.
Accuracy is increased by increasing the bandwidth.
