Typical ranges for different objects ==================================== In :numref:`tab_range_wo_lens` and :numref:`tab_range_w_lens` the visibility for a range of objects with common shapes (cylinder, plate, etc.) and of varying reflectivity, i.e. materials, is shown. Objects are at normal incidence and the governing system parameters are :math:`\sigma`, :math:`\gamma`, and C, as shown in :eq:`eq_radar_eq`. The envelope service was used to collect the data with Profile 2. The object counts as distinguishable from the noise with a SNR > 10 dB (Y), barely visible between 5 dB and 10 dB (-) and not visible with a SNR < 5 dB (N). The range can be further increased based on the configuration of the sensor, as described in :ref:`handbook-a111-configuring`. As an example for such an optimization :numref:`tab_range_wo_lens` shows results with an added radar Fresnel lens. .. _tab_range_wo_lens: .. table:: Typical ranges using the envelope service and Profile 2, **without radar lens**. :align: center :widths: auto =============================================== ===== ===== ===== ===== ===== Object 0.5 m 1 m 2 m 5 m 7 m =============================================== ===== ===== ===== ===== ===== Corner reflector (*a* = 4 cm) Y Y Y Y N Planar water surface Y Y Y Y Y Disc (*r* = 4 cm) Y Y Y Y Y Cu Plate (10x10 cm) Y Y Y Y Y PET plastic Plate (10x10 cm) Y Y Y Y -- Wood Plate (10x10 cm) Y Y -- N N Cardboard Plate (10x10 cm) Y Y Y N N Al Cylinder (*h* = 30, *r* = 2 cm) Y Y -- N N Cu Cylinder (*h* = 12, *r* = 1.6 cm) Y Y Y N N PP plastic Cylinder (*h* = 12, *r* = 1.6 cm) Y N N N N Leg Y Y -- N N Hand (front) Y Y N N N Torso (front) Y Y Y N N Head Y Y N N N Glass with water (*h* = 8.5, *r* = 2.7 cm) Y Y N N N PET Bottle with water (*h* = 14, *r* = 4.2 cm) Y Y N N N Football Y Y N N N =============================================== ===== ===== ===== ===== ===== .. _tab_range_w_lens: .. table:: Typical ranges using the envelope service and Profile 2, **with 7 dB radar lens**. :align: center :widths: auto ============================================== ===== ===== ===== ===== ===== Object 0.5 m 1 m 2 m 5 m 7 m ============================================== ===== ===== ===== ===== ===== Corner reflector (*a* = 4 cm) Y Y Y Y Y Planar water surface Y Y Y Y Y Disc (*r* = 4 cm) Y Y Y Y Y Cu Plate (10x10 cm) Y Y Y Y Y PET plastic Plate (10x10 cm) Y Y Y Y Y Wood Plate (10x10 cm) Y Y Y Y N Cardboard Plate (10x10 cm) Y Y Y Y -- Al Cylinder (*h* = 30, *r* = 2 cm) Y Y Y Y -- Cu Cylinder (*h* = 12, *r* = 1.6 cm) Y Y Y Y -- PP plastic Cylinder (*h* = 12, *r* = 1.6 cm) Y Y Y N N Leg Y Y Y Y N Hand (front) Y Y Y N N Torso (front) Y Y Y Y N Head Y Y Y -- N Glass with water (*h* = 8.5, *r* = 2.7 cm) Y Y Y -- N PET Bottle with water (*h* = 14, *r* = 4.2 cm) Y Y Y N N Football Y Y Y N N ============================================== ===== ===== ===== ===== =====