nanoradar NRA15, Руководство пользователя

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10
0xAA 0xAA 0x0C 0x07 0x01 0xC8 0x07 0xD0 0x00 0x02 0xEE 0x96
0x55 0x55
Description:
Start Sequence Message ID Data Payload End Sequence
Interpretation
：
Start Sequence = 0xAAAA
Message ID = 0x0C + 0x07*0x100 = 0x70C
Data Payload = 0x01 0xC8 0x07 0xD0 0x00 0x02 0xEE 0x96
End Sequence = 0x5555
Each field of Data Payload is parsed as following
：
Index = 1
Rcs = 0xC8*0.5 – 50 = 50
Range = (0x07*0x100 +0xD0)*0.01 = 20
Rsvd1 = 0
RollCount = (0x0 & 0xE0) >> 5 = 0
SNR
= 0x96 – 127 = 23
Note:
The user needs to program to parse the sensor output data
(hexadecimal).
The 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 antennas, it has
the ability to measure the angle. Besides, the more antennas it has, the higher accuracy of angle
resolution it could realize.
2) Q: In the height measurement of NRA15, which will it be subjected to when there is
vegetation and ground? When the ground is water, is it based on the ground surface or the water