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NRA15 millimeter wave radar

User manual

Hunan Nanoradar Science and Technology Co., Ltd.

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Summary of Contents for NRA15

Page 1: ...NRA15 millimeter wave radar User manual Hunan Nanoradar Science and Technology Co Ltd ...

Page 2: ...d improve any product details described in the document without prior notice The contents of this manual are provided at the time of product manufacture and no explicit or tacit warranty is given to the accuracy reliability and content of the document unless required by applicable law To the maximum extent permitted by applicable law the Company and its suppliers under any circumstances shall not ...

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Page 4: ...nstallation 2 4 2 Test and use 错误未定义书签 5 Serial port data parsing 4 5 1 NRA15 configuration Sensor Configuration 5 5 2 NRA15 back Sensor Back 6 5 3 NRA15 system status Sensor Status 7 5 4 Targets output status Target Status 7 5 5 Target output information Target Info 8 6 Data parsing examples 9 7 Frequently asked questions FAQ 错误未定义书签 8 References 错误未定义书签 ...

Page 5: ... module is vertically down during installation to ensure accurate detection data 3 The radar cannot be installed near the nozzle of the atomizer to prevent the pesticide from corroding the radar 4 The product has adopted shielding measures to avoid the adverse effects caused by electromagnetic interference in space Meanwhile the radar should be away from electromagnetic interference sources such a...

Page 6: ...C yellow 4 2 Test and use NRA15 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 NRA15 sensor The UART serial port test method is as follows First of all the millimeter wave radar general management tool PC test software user manual shall be provided by Nanora...

Page 7: ...esult in the appearance of a number of fixed interference frequency components in the spectrum during the algorithm analysis which would have an impact on test results and result in the continuous target output in a certain fixed distance The TX and RX pins of the USB to TTL adapter need to be cross connected to the TX and RX pins of the NRA15 sensor 3 USB serial port adapter is connected to PC An...

Page 8: ...nce and field of view 5 Serial port data parsing NRA15 radar sensor utilizes a UART TTL interface with a default transmission rate of 115200 baud Starting with a start sequence and terminating with a termination sequence for each data message At each data cycle of NRA15 20ms the message for NRA15 system status and target output status would be output If the field of detected target numbers in mess...

Page 9: ...load is defined according to the Message ID see the next section The End Sequence is set to 0x5555 Table 4 Definition of Message ID Num Message ID Message Name Comment 1 0x200 Sensor Configuration NRA15 configuration 2 0x400 Sensor Back NRA15 back 3 0x60A Sensor Status NRA15 status 4 0x70B Target Status Target output status 5 0x70C Target Info Target output information Note The Message ID is repre...

Page 10: ...R W 7 1 0 1 u1 0 Read parameter 1 write parameter Parameter 8 31 1 u24 According to the definition of Data Type Reserved 32 63 1 u32 Note Currently NRA15 only supports reading version information Other functions are not yet available If R W are 0 reading the parameters and the Parameter content is meaningless If the R W are 1 that is writing parameters Parameter is defined according to DataType 5 ...

Page 11: ...es the configuration result and 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 NRA15 the NRA15 will return the execution result When the version information is returned the corresponding Parameter field format is as follows Table 7 Sensor Version back format Message ID 0x400 Signal Name Bit Resolution...

Page 12: ...utput status is shown as in the table below The start sequence 0xAAAA and termination sequence 0x5555 has been omitted for the table where the value of 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 NRA15 sensor in time it will cause the received RollCount value to be discontinuous At this time a faster removal methods ...

Page 13: ...ce low 8 bit Rsvd1 32 39 u8 VrelH 40 42 0 05m s 0 7 u3 Rsvd1 43 45 1 1 u3 RollCount 46 47 1 u2 NRA15 is fixed to 0 VrelL 48 55 0 05m s 0 255 u8 SNR 56 63 1dB 0 255 u8 Signal Noise Ratio Note 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 Rcs RcsValu...

Page 14: ...he data before being parsed is hexadecimal and is decimal after being parsed 0x2AF5 hexadecimal is converted to decimal 10997 5 16 0 F 16 1 A 16 2 2 16 3 7 Frequently asked questions FAQ 1 Q What about the angular accuracy of NRA15 NRA15 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 ant...

Page 15: ...urface If the airplane reaches over 5m the airflow would not affect the vegetation below And if the vegetation density is large the reference point should be vegetation 8 References 1 White paper on NRA15 millimeter wave radar 2 User manual for the general management system of Nanoradar mmw radar Hunan Nanoradar Science and Technology Co Ltd Tel 0731 88939916 No 27 Wenxuan Road Hi tech District Ch...

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