2
Cell coordinates
Pθ, Pφ
The cell coordinates are the data cell number of the image screen. In the above figure, the range of horizontal 30 °
vertical 20 ° is measured in increments of 0.5 ° both in the horizontal and vertical directions, and is an example of the
cell coordinates when the number N of data in the horizontal direction is 61 and the number M of data in the vertical
direction is 41.
Correspondence between cell coordinates and polar coordinates
θ = P
θ
* (horizontal measurement angle unit) + horizontal measurement start angle
φ = P
φ
* (measurement unit in the vertical direction) + measurement start angle in the vertical direction
The measurement angle unit in the horizontal direction is fixed at 0.5 °, and the measurement angle unit in the vertical
direction may be 0.5 °, 1 °, 2 ° depending on the setting.
P
θ
=0,P
φ
=0
P
θ
=60,P
φ
=0
P
θ
=0,P
φ
=40
P
θ
=60,P
φ
=40
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