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Ranger R20SS

Long-Range, High Resolution Target Detection Radar

View Datasheet > Ranger R20SS


The FLIR Ranger® R20SS is a ground and coastal surveillance radar specifically designed to detect and track personnel and vehicles within a 20-km range. With its solid-state electronic scanning capability and fast 2-Hz refresh rate, the Ranger R20SS delivers best-in-class target detection and acquisition performance. Because it operates in the X-band, R20SS is minimally affected by adverse weather or precipitation. It scans a +/-90° area twice per second with low false alarm rate.

Additional information

Operating Frequency

X Band

Minimum Detection Velocity

> 0.1 m/s min, Vehicles, personnel, rubber rafts, boats

Target Velocity

0.1 to 44 m/s

Number of tracks

Up to 512 simultaneous

Range Accuracy

± 3 m (1 sigma)

Scan Rate

2 Hz (90 deg sector)


90° AZ, 5° EL in sector mode, 360° AZ, ± 30° EL in scan mode (with optional pan/tilt device)

Elevation Control

Yes with optional Pan/Tilt

Input Power

21-42 VDC


Ethernet, wireless, fiber


Yes (ICD-0100 compatible)

Mask Zone(s)

Unlimited polygons


Radar only: 14.7h x 29.6w x 6.0d (inches), 37h x 75w x 14d (cm) Radar with pan/tilt: 29.4h x 29.6w x 6.6d (inches), 75h x 75w x 17d (cm)


40 lbs (18.2 kg) – radar 26.4 lbs (12 kg) – pan/tilt

Power Consumption (nominal)

245 Watts (radar) ≤ 30 Watts (pan/tilt)

Operating Range

20 – 30, 000 m 20 – 60, 000 m (ext range)*

Detection Range:Personnel Walking (1 m2 RCS)Rubber Raft (1 m2 RCS, ss 3)Patrol Vessel (10 m2 RCS, ss 4)Vehicles, Vessels ( ≥ 30 m2 RCS)Vehicles, Vessels ( ≥ 10,000 m2 RCS)

Up to 12, 000 m Up to 12, 000 m Up to 20, 000 m Up to 28, 000 m Up to 55, 000 m (ext range)

False Alarm Rate

Very Low


-40° to +60°C (operating), -40° to +70°C (storage)


Up to 100%

Weather Sealing

IP 67 Rating – radar. IP 66 – pan/tilt

Mil Spec

Complies with MIL-STD-810G and MIL-STD-461F


> 28, 000 hrs – radar. > 50, 000 hrs – pan/tilt

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