Figure 8
![Figure 8](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1687-6180-2011-124/MediaObjects/13634_2011_Article_129_Fig8_HTML.jpg)
Spatial geometry of the sensor and the target in the SENSIAC data. (a) The sensor orientation in a world coordinate system; (b) The slant and ground ranges between the sensor and target (side view); (c) The aspect orientation and the heading direction (top-down view); (d) Sensor-centered 3D coordinate system used for algorithm evaluation.