User's Manual

27
MESSAGE FORMATS
RADAR EVENT MESSAGES
Tracked Target Message / 04 Message Format
Name Size / Bytes Value Notes
STX 1 2 Start of message byte
MT 2 04 Message Type
, 1 ‘,’ Comma
Message Time 8 DDDDD.DD Time of message in seconds.
0 to 86400.00 seconds
, 1 ‘,’ Comma
Track Number 1 XX Track Number
, 1 ‘,’ Comma
Direction
‘D’
1 ‘A’ = Approaching Target
‘R’ = Receding Target
‘X’ = Simulated approaching target
‘Y’ = Simulated receding target
Direction the target is travelling.
, 1 ‘,’ Comma
Speed 5 ‘DDD.D’ Target speed to one decimal place in
decimal format
, 1 ‘,’
Speed Units
‘U’
1 ‘M’ = MPH
‘K’ = KPH
The speed units used for the
measurement
, 1 ‘,’ Comma
Range to Target
OR
Y-range to Target
5 ‘DDD.D’ Target range in metres OR
Y-range to target in metres
(depending on Coordinate Type)
, 1 ‘,’ Comma
Angle of Arrival
OR
X-range to Target
5 ‘±DD.D’ Angle of Arrival in degrees OR
X-range to target in metres
(depending on Coordinate Type)
, 1 ‘,’ Comma
Target Bearing 5 DDD.D The bearing of the target in degrees
relative to the radar.
0° is a target travelling directly away
from the radar
90° is a target travelling from left to
right across the radar
180° is a target travelling directly
towards the radar
270° is a target travelling from right to
left across the radar
, 1 ‘,’ Comma
Coordinate Type ‘C’ 1 ‘P’= Polar
‘C’= Cartesian
Coordinate Type used for positional
information
, 1 ‘,’ Comma
Target Amplitude 5 ‘DDD.D’ Target Power Amplitude in dB
* 1 ‘*’ Asterisk
Check Sum 2 ‘XX’ Check sum in hexadecimal format
ETX 1 3 End of message byte