TIDUF01 November   2021 AWR2944

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Why use Radar?
    2. 1.2 TI Corner Radar Design
    3. 1.3 Key System Specification
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 AWR2944 Single-Chip Radar Solution
      2. 2.3.2 AWR2944 Evaluation Module
    4. 2.4 System Design Theory
      1. 2.4.1  Antenna Configuration
      2. 2.4.2  Chirp Configuration and System Performance
      3. 2.4.3  Data Path
      4. 2.4.4  Chirp Timing
      5. 2.4.5  eDMA Configuration
      6. 2.4.6  Memory Allocation
      7. 2.4.7  DDMA
      8. 2.4.8  Empty Subband Based DDMA
      9. 2.4.9  RANSAC
      10. 2.4.10 Group Tracker
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
      2. 3.1.2 Software and GUI
    2. 3.2 Test Setup
    3. 3.3 Test Results
  9. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  10. 5About the Author

2.4.2 Chirp Configuration and System Performance

To achieve the specific corner radar, use a case with a visibility range of 200 m and memory availability of the AWR2944. Table 2-1 lists the chirp configuration used.

Table 2-1 Chirp Configuration
PARAMETERCONFIGURATION
Idle time (μs)5
ADC start time (μs)5
Ramp end time (μs)18.83
Number of ADC samples384
Frequency slope (MHz/μs)8.883
MIMO (1 → yes)1
Number of chirps per profile768
Effective chirp time (μs)23.83
Bandwidth (MHz)114
Frame length (ms)250
Table 2-2 System Performance Parameter
PARAMETERSPECIFICATIONS
Range resolution (m)1.3
Maximum distance (m)200
Native maximum velocity (kmph)140
Note: The configuration and parameters in Table 2-1 and Table 2-2 are based on the current application release but not limited by the device.

A single legacy frame is used for this application where all the chirps are connected with one profile configuration.