nanoradar NRA15, Руководство пользователя

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9
(0xAAAA) and the termination sequence (0x5555) have been omitted from
the table. When the radar sensor works normally and detects the target, it outputs the NRA15
system status message, and then outputs the target output status message, and finally outputs the
target output information message.
Table 10 NRA15 target output information format
Message ID
0x70C
Signal Name Bit Resolution Interval Type Comment
Index 0..7 1 0…255 u8 Target ID
Rcs 8..15 - 0…255 u8
The section of
radar reflection
RangeH 16..23 0.01m 0…255 u8
Target distance
high 8 bit
RangeL 24..31 0.01m 0…255 u8
Target distance
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 = RcsValue*0.5 – 50
- Range = (RangeHValue*256 + RangeLValue)*0.01
- RollCount = RollCountValue
- SNR
= Value-127
The target reflection Radar-Cross Section (RCS), the target range (Range), Signal-Noise
Ratio(SNR) can be obtained by these calculations, to accurately detect the targets.
6 Data parsing examples
Taking Message ID as an example, there is a frame of the Target Info data message as follows:
Target Info Data: