Typical ranges for different objects

Typical ranges for different objects#

In Table 19 and Table 20 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 \(\sigma\), \(\gamma\), and C, as shown in Eq. 19. 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 Configuration overview. As an example for such an optimization Table 19 shows results with an added radar Fresnel lens.

Table 19 Typical ranges using the envelope service and Profile 2, without radar lens.#

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
Table 20 Typical ranges using the envelope service and Profile 2, with 7 dB radar lens.#

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