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3.6 Main Functions
3.6.1 Conversion between radar coordinate system and northbound coordinate system
Figure 3.7 Radar coordinate system
Figure 3.8 Northbound coordinate system
The radar coordinate system is a standard Cartesian coordinate system (Cartesian coordinate system), as shown in
Figure 3.7 The target azimuth obtained by radar detection is the angle from the x-axis counterclockwise rotation to the
radar target connection, so the azimuth increases counterclockwise, the positive x-axis represents 0 degrees, and the
positive y-axis represents 90 degrees. The northbound coordinate system is shown in Figure 3.8. The azimuth in the
northbound coordinate system refers to the angle at which the northwest clockwise rotates to the radar target line, so the
azimuth increases clockwise, with the northward representing 0 degrees and the eastward representing 90 degrees. The
conversion formula between the azimuth angle
r
of the radar coordinate system and the azimuth angle
n
of the north
coordinate system is
)
360
,
450
mod(
r
n
