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Continental ARS 408-21

The Continental ARS 408-21 Radar is preferred with the Baidu Apollo kit. It is fast, safe, reliable and cost-effective and produces real-time distance to object scanning. This radar has a built-in fail-safe that can detect a possible risk of collision (dependent on speed of vehicle) and display it automatically. It works through all weather conditions with a low-performance loss in extreme conditions. Costs are kept low by using Radar technology with less complex measuring principles, development and mass production in the automotive industry.


  • The ARS 408-21 provides both excellent measuring performance and reliable operation. This sensor provides real-time object information, such as distance, and is intended to be used for collision mitigation.
  • Applicable at all weather conditions and performs well even in extreme situations.
  • Self-diagnosing fail-safe operation.
  • Produces quality targets, free of false positives, without the use of additional filters.


Measure performance to natural targets (non-reflector targets)
Distance range 0.20 …250m far range, 0.20…70m/[email protected]…±45° near range and 0.20…[email protected]±60° near range
Resolution distance measuring point targets, no tracking Up to 1.79m far range, 0 .39m near range
Accuracy distance measuring point targets, no tracking ±0.40m far range, ±0.10m near range
Azimuth angle augmentation (field of view FoV) -9.0°…+9.0° far range, -60°…+60° near range
Azimuth beam width (3 dB) 2.2° far range, 4.4°@0° / 6.2°@±45° / 17°@±60° near range
Resolution azimuth angle point targets, no tracking 1.6° far range, 3.2°@0° / 4.5°@±45° / 12.3°@±60° near range
Accuracy azimuth angle point targets, no tracking 0.1° far range, ±0.3°@0°/ ±1°@±45°/ ±5°@±60°near range
Velocity range -400km/h…+200km/h (- leaving objects…+approximation)
Velocity resolution target separation ability 0.37km/h far field, 0.43km/h near range
Velocity accuracy point targets ±0.1km/h
Cycle time app. 72ms near and far measurement
Antenna channels / -principle micro stripe 4TX/2x6RX = 24 channels = 2 TX/6RX far – 2TX/6RX near / Digital Beam Forming
Operating conditions
Radar operating frequency band cc. ETSI & FCC 76…77GHz
Mains power supply at 12V DC / 24V DC +8.0V…32V DC
Power consumption at 12V DC / 10A fuse 6.6W / 550mA typ. and 12W / 1.0A @max. peak power
Load dump protection internal disconnection >60V and re-start returning to <60V
Operating-/ storage temperature -40°C…+85°C / -40°C…+90°C
Life time acc. LV124 part 2 – v1.3 1000h or 10 years (for passenger cars)
Shock mechanical 500m/s2@6ms half-sine (10 x shock each in +/-X/Y/Z dir.)
Vibration mechanical 20 [(m/s2)2/Hz]@10Hz / 0,14 [(m/s2)2/Hz]@1000Hz (peak)
Protection rating ISO 16750 Classification (Trucks) for vibration IP 6k 9k (dust, high-pressure cleaning) IP 6k7 (10 cm under water), ice-water shock test, salt fog resistant, mixed gas EN 60068-2-60
Monitoring function self-monitoring (fail-safe designed)
Interface up to 8 ID 1 x CAN – high-speed 500 kbit/s
Dimensions / weight W * L * H (mm) / (mass) 38 * 91 * 31 / app. 320g
Material housing front/back cover BT GF 30 black (BASF-Ultradur B4300G6 LS SW 15073) / AC-47100 (AlSi12Cu1(FE)) die-cast aluminum or EN AW 5754 (3.535) AlMg3 pressed-formed aluminum
Measuring principle (Doppler’s principle) in one measuring cycle due basis of FMCW with very fast ramps independent measurement of distance and velocity
Version ARS 408-21 sensor for the industry CAN protocol for free communication
The version -21 allows to set maximum 8 ID’s and maximum 8 collision avoidance regions and to change the sensitivity between low and high sensitivity by the user continuously