AWR1642的short_range_radar demo的有关问题

user1642.

Other Parts Discussed in Thread: AWR1642, UNIFLASH

TI的工程师你们好，关于AWR1642EVM和相关的实验demo我有以下几个问题请教。

1、AWR1642的3种adcOutput模式除了影响最大中频带宽以外各有什么特点，一般情况下（比如默认）推荐采用哪种模式？

2、在short_range_radar的工程文件中，为什么SRR80m的subframe只用一个发射天线，而USRR20m的subframe使用两个发射天线，有什么讲究吗？

3、在short_range_radar的srr_config_consts.h中提到，The SRR was initially designed for 80m, but with a slight configuration change will work at 120m (boresight).

这个boresight在这里是什么意思？假如修改srr_config_chirp_design_SRR80.h中的发射参数，最大能支持探测多远的距离呢？

谢谢！

4 年多前

0 Wesley He 4 年多前

TI__Mastermind 20485 points

1, 推荐complex 1x
ADC采样怎么理解
文档：Complex base band arch. For FMCW radar systems (Auto) - IQ
www.ti.com/.../spyy007
视频：mmWave AWR1x Interference Detection - A crucial step to effective mitigation：training.ti.com/mmwave-awr1x-interference-detection-crucial-step-effective-mitigation
Complex 1x VS 2x：
For complex 1x mode, DFE applies IQ imbalance correction and then downsample the signal. So it allows 80%-90% of the signal bandwidth compare to the sampling rate.
For complex 2x mode, only half of the bandwidth (0~fs/2) is occupied by the signal, and the other half (the image band) can be occupied by other noise source like interference. So complex 2x mode is mainly designed for applications that needs interference cancellation.

2.MIMO模式增加分辨率。
c. 对于SDK demo，提供详细算法及软件流程的文档介绍
i. file:///C:/ti/mmwave_sdk_02_01_00_04/packages/ti/demo/xwr16xx/mmw/docs/doxygen/html/index.html
ii. file:///C:/ti/mmwave_sdk_02_01_00_04/packages/ti/demo/xwr14xx/mmw/docs/doxygen/html/index.html

3.指的是0度角。