nanoradar NRA24 User Manual
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nanoradar NRA24 User Manual

Millimeter wave radar
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NRA24 millimeter wave radar
User manual
(With check sum)
Hunan Nanoradar Science and Technology Co., Ltd.

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Summary of Contents for nanoradar NRA24

  • Page 1 NRA24 millimeter wave radar User manual (With check sum) Hunan Nanoradar Science and Technology Co., Ltd.
  • Page 2 Disclaimers Thanks to purchase this product. There is web pages about NRA24 altimeter in our official website (www.nanoradar.cn).You can find the latest product information and user manual on the pages. The user manual is subject to change without notice. Please read this manual carefully before using this product. Once used, it is deemed to have recognized and accepted the content of this manual.

  • Page 3: Table Of Contents

    Test and use..........................2 Serial-port data parsing......................... 4 NRA24 configuration (Sensor Configuration)................5 NRA24 back (Sensor Back)....................... 6 NRA24 system status (Sensor Status)..................7 Targets output status (Target Status)...................8 Target output information (Target Info)..................8 Data parsing examples........................10 Electrostatic protection........................11 Electrostatic protection measures.....................

  • Page 4: Brief Introduction Of Nra24

    1 Brief introduction of NRA24 NRA24 is compact K-band radar altimeter developed by Hunan Nanoradar Science and Technology Co., Ltd. It adopts 24GHz-ISM frequency band, with the advantages of 2cm measuring accuracy, small size, high sensitivity, light weight, easy integration and stable performance, which satisfies the application requirements in unmanned aircraft system (UAS), helicopters, small airships and other field.

  • Page 5: Shipping List

    0~3.3V DC 4.2 Test and use NRA24 sensor data can be acquired and parsed by the "MMW Radar general Management Tool" testing software, which is used to visually display the observation results. The tool is helpful in the use of NRA24 sensor.
  • Page 6 Serial port adaptor to connect USB to TTL 12V power adaptor PC test software 2) With a USB connection to TTL serial port adaptor, to connect PC and NRA24, as shown in figure 6 . Figure 3 Diagram for serial port connection Note: ...

  • Page 7: Serial-Port Data Parsing

    Figure 4 Radar PC test interface 4) Start to test. NRA24 radar antenna faces directly to the moving target, or there is relatively small movement between the sensor and the target. You can see the target indicator of the red triangle in the UI interface, and the target distance R.

  • Page 8: Nra24 Configuration (Sensor Configuration)

    The Message ID is represented by 2 bytes, Byte2 is the low byte, and Byte3 is the high byte. For example, the output of the NRA24 message is 0xAA 0xAA | 0x0A 0x06 | Data Payload | 0x55 0x55, which indicates that the message ID is 0x60A (NRA24 system status) and Data Payload is the NRA24 system status.

  • Page 9: Nra24 Back (Sensor Back)

    R / W are 1, that is, writing parameters, Parameter is defined according to DataType. 5.2 NRA24 back (Sensor Back) After the PC or other MCU sends the configuration signal to NRA24, NRA24 will return the execution result. The format is shown in the following table. The start sequence (0xAAAA) and the termination sequence (0x5555) have been omitted from the table.

  • Page 10: Nra24 System Status (Sensor Status)

    Parameter is the value of the configured DataType. 5.2.1 Sensor Version After the PC or other MCU sends the read version information of sensor to NRA24, the NRA24 will return the execution result. When the version information is returned, the corresponding...

  • Page 11: Targets Output Status (Target Status)

    RollCount is continuously cycled between 0-1-2-3-0-1-2-3 ••••••. When the PC or an external MCU cannot process the output data of the NRA24 sensor in time, it will cause the received RollCount value to be discontinuous. At this time a faster removal methods should be found to solve this problem.
  • Page 12 The value of each field in the table is not the true value of the target information. The true value of the target information needs to be calculated through the following relations: Index IndexValue Target ID = 1. According to Track information, NRA24 outputs only one target. RcsValue*0.5 – 50 Factory test retention value, do not do output Range (RangeHValue*256 + RangeLValue)*0.01...

  • Page 13: Data Parsing Examples

    6 Data parsing examples Take Message ID as the target output information (Target Info) as an example, there is a frame of the Target Info data message as follows: Target Info Data: 0xAA 0xAA 0x0C 0x07 0x01 0xC8 0x07 0xD0 0x00 0x02 0xEE 0x90 0x55 0x55 Description: Start Sequence...

  • Page 14: Electrostatic Protection

    8 Frequently asked questions (FAQ) (1) Q: What about the angular accuracy of NRA24? A: NRA24 is a 24GHz mmw radar altimeter with 1T1R antenna, which is developed by Nanoradar. It cannot measure the target angle. For the radar with more than two receiving antennas, it has the ability to measure the angle.

  • Page 15: References

    / receive link, to improve the dynamic range of radar target detection. At the same time, NRA24 utilizes the advanced integrated planar microstrip array antenna, which contains 40 vertical polarization radiation units for transmitting and receiving antennas.

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