Continental ARS 408-21 Premium Long Range Radar Sensor 77 GHz
A premium, robust, and compact radar sensor designed for advanced automotive and industrial applications.
Product Overview
The A.D.C. GmbH, part of Continental, offers the ARS 408-21, a premium 77 GHz long-range radar sensor. It is designed as an adaptable solution for various applications and serves as an enhanced version of the series 40X.
Typical Areas of Application
- Anti-collision protection for all types of vehicles, including partially autonomous systems.
- Headway control for far range detection in vehicles of all descriptions, particularly autonomous ones.
- Area monitoring for far range, suitable for hazardous or non-accessible zones.
- Classification of objects.
- Object detection in challenging or unclear environments.
- Detection of unremarkable objects, even when protected by a radome.
Measuring Procedure
The rugged ARS 408-21 sensor from Continental independently measures the distance and velocity of objects using the Doppler principle. It operates with Frequency Modulated Continuous Wave (FMCW) technology, employing very fast ramps for real-time scanning at 17 Hz. A key feature is its simultaneous measurement of great distances up to 250 meters, relative velocity, and the angular relationship between two objects.
Advantages
- Fast and Safe: The ARS 408-21 balances high measuring performance with operational safety. It can determine object distance in real-time, assessing potential collision risks based on driving speed.
- Reliable: The sensor is fail-safe, capable of automatically recognizing and reporting issues with the sensor or its environment.
- Robust and Small Design: Leveraging radar technology with a less complex measuring principle and benefiting from automotive supply industry development and mass production, the sensor features a very robust and compact design.
Sensor Field of View (FoV) Description
The sensor's coverage is depicted by two main sensing areas: the "Blue FoV Near Sensing Area (Short Range)" and the "Red FoV Far Sensing Area (Far Range)". The near sensing area covers distances up to approximately 70 meters with a wide angular range of ±40°, extending to 20 meters at ±60°. The far sensing area covers distances up to 250 meters with a narrower angular range of ±9°. The diagram indicates signal strength levels (+10 dBsm) at various ranges.
Technical Specifications
Measuring Performance
| Parameter | Value (to natural targets, non-reflector targets) |
|---|---|
| Distance range | 0.20 ... 250 m far range; 0.20...70m/100m@0...±45° near range and 0.20...20m@±60° near range |
| Resolution distance measuring | point targets, no tracking |
| Accuracy distance measuring | point targets, no tracking |
| Azimuth angle augmentation | (field of view FoV) |
| Elevation angle augmentation | (field of view FoV) |
| Azimuth beam width (3 dB) | 14° far range, 20° near range at 6 dBm two way |
| Elevation beam width | 2.2° far range, 4.4°@0° / 6.2°@±45° / 17°@±60° near range |
| Resolution azimuth angle | 1.6° far range, 3.2°@0° / 4.5°@±45° / 12.3°@±60° near |
| Accuracy azimuth angle | point targets, no tracking |
| Velocity range | -400 km/h...+200 km/h (- leaving objects...+approximation) |
| Velocity resolution | 0.37 km/h far field, 0.43 km/h near range |
| Velocity accuracy | ±0.1 km/h |
| Sensitivity (min. RCS@x m) | 10m²@250m far range; 1m²@70m & 0°..±45° - 1m²@10m & ±60° near range |
| Cycle time | app. 60 ms near and far measurement |
| Antenna channels / -principle | 4TX/2x6RX = 24 channels = 2TX/6RX far - 2TX/6RX near / Digital Beam Forming |
Operating Conditions
| Parameter | Value |
|---|---|
| Radar operating frequency band | 76...77 GHz |
| Transmission capacity | acc. ETSI & FCC <14.1dBm@77GHz /<35.1dBm - sweep bandwidth 500 MHz |
| Mains power supply | average / peak EIRP at 12 V DC / 24 V DC |
| Power consumption | at 12 V DC / 10 A fuse; 6.6 W / 550 mA typ. and 12 W / 1.0 A @max. peak power |
| Load dump protection internal | disconnection >60 V and re-start returning to <60 V |
| Operating-/ storage temperature | -40°C...+85°C / -40°C...+90°C |
| Life time | 10000 h or 10 years (for passenger cars) |
| Shock | 500 m/s²@6 ms half-sine (10 x shock each in +/-X/Y/Z dir.) |
| Vibration | 20 [(m/s²)²/Hz]@10 Hz / 0,14 [(m/s²)²/Hz]@1000Hz (peak) |
| Protection rating | 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 |
Connections
| Parameter | Value |
|---|---|
| Monitoring function | self monitoring (fail-safe designed) |
| Interface | 1 x CAN - high-speed 500 kbit/s |
Housing
| Parameter | Value |
|---|---|
| Dimensions / weight | 137.25 * 90.8 * 30.66 / app. 320 g |
| Material | housing front / backcover: PBT GF 30 black (BASF-Ultradur B4300G6 LS sw 15073) / AC-47100 (AISi12Cu1(FE)) die cast aluminium or EN AW 5754 (3.535) AlMg3 pressed-formed aluminium |
Miscellaneous
| Parameter | Value |
|---|---|
| Measuring principle | (Doppler's principle) in one measuring cycle due basis of FMCW with very fast ramps |
| Version | ARS 408-21 |
| Interface | sensor for the industry |
| Additional Info | 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. Further interfaces as converter, software adaption are possible on demand and in case of assumption of costs. |
Contact Information
A.D.C. GmbH
Peter-Dornier-Str. 10
Industrial Sensors D-88131 Lindau
Tel.: +49 8382 9699-114
Fax: +49 8382 969922-114
Email: Roland.Liebske-Ext@continental-corporation.com
Website: www.continental-automotive.com/industrial-sensors
