CALTERAH | Corner Radar

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mmWave Radar SoCs

Automotive-Grade mmWave Radar SoCs

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Corner Radar

Enabling Blind Spot Detection (BSD), Lane Change Assist (LCA), Rear Cross Traffic Alert (RCTA), and other ADAS functions

Calterah's high-performance corner radar solution based on the Alps-Pro mmWave radar SoC can accurately identify pedestrians, vehicles, and complex road conditions, achieving Blind Spot Detection (BSD), Lane Change Assist (LCA), Rear Cross Traffic Alert (RCTA) and other ADAS functions. This solution offers long-range and medium-range modes with a non-equally-spaced DDM-MIMO waveform design. The radar can detect multiple targets around a vehicle stably, boasting long detection range, wide velocity range, wide Field of View (FOV), stable angular resolution, high point-cloud density, etc. With such advantages, the corner radar solution can better fulfill the requirements of L2/L2+ ADAS systems, facilitating the wide application of intelligent driving assistance.

Specifications of Calterah Corner Radar Solution Enabled by Alps-Pro CAL77S344-AE

Item/Mode	Long-Range Radar (LRR)	Medium-Range Radar (MRR)
Maximum Range	180 m (10 dBsm，45°)	100 m (10 dBsm，45°)
Range Resolution	0.4 m	0.2 m
Range Accuracy	±0.1 m	±0.05 m
Velocity Range	-85–85 m/s	-85–85 m/s
Velocity Resolution	0.14 m/s	0.1 m/s
Velocity Accuracy	±0.025 m/s	±0.025 m/s
Azimuth FOV	-75°–75°	-75°–75°
Azimuth Resolution	4°	4°
Azimuth Accuracy	±0.2°	±0.2°
Elevation FOV	-12°–12°	-12°–12°
Elevation Resolution	10°	10°
Elevation Accuracy	±0.5°	±0.5°
Target Maximum (Raw Data)	512	512
Refreshing Cycle	50 ms	50 ms

*Calterah Alps-Pro SoC family also offers the CAL77S344-AR chip device with (Radiator on Package) RoP^®. Working with waveguide antennas, CAL77S344-AR can enable automotive corner radar to achieve a longer detection range, a wider Field of View (FOV), and enhanced angular resolution.

Performance Highlights

Longer Detection Range

Longer detection range (MRR: 100 m, LRR: 180 m), high range accuracy (MRR: ±0.05 m, LRR: ±0.1 m), high range resolution (MRR: 0.2 m, LRR: 0.4 m). Adopting a 45° beam-deflection antenna design, the solution supports long-distance detection of objects 180 m ahead in the same lane of a vehicle

More Accurate Real-Time Velocity Measurement

Wide velocity range (-85–85 m/s), high velocity accuracy (±0.025 m/s), and high velocity resolution (MRR: 0.1 m/s, LRR: 0.14 m/s

Angular measurement in Large FOV with High Accuracy

Large FOV (azimuth: -75°–75°, elevation: -12°–12°) and high 2D angular measurement accuracy (azimuth: ±0.2°, elevation: ±0.5°)

More Stable Angular Resolution with Higher Accuracy

High azimuth resolution (4°) and more stable angle resolution performance

More Accurate Depiction of Objects

High point cloud density enables more accurate scene representation.

Faster Operation Speed

The hardware-based complete DDM-MIMO signal processing flow operates at a faster speed, and it can easily achieve the 50 ms frame rate requirement while outputting 512 objects.

Lower Signal Leakage

The comprehensive phase shifter calibration solution enables automatic calibration within one second, thus lowering the signal leakage level to less than -30 dB.

More Diversified Interfaces

Alps-Pro supports an Ethernet interface to output more diversified target information, point cloud information, and other signal processing results required by domain controllers.

Demo Videos

SoCs Applied

Alps

CAL77S244-AE

Alps 4T4R 77/79 GHz Radar SoC

Calterah cost-efficient automotive-grade mmWave radar SoC, ideal for ADAS applications such as corner radar and forward-looking radar

Alps

CAL77S224-AE

Alps 2T4R 77/79 GHz Radar SoC

Calterah cost-efficient automotive-grade mmWave radar SoC, ideal for corner radar

Alps-Pro

CAL77S344-AE

Alps-Pro 4T4R 77/79 GHz Radar SoC

Calterah high-performance automotive-grade mmWave radar SoC, ideal for L2/L2+ ADAS applications such as corner radar and forward-looking radar

Alps-Pro

CAL77S344-AR

Alps-Pro 4T4R 77/79 GHz Radar RoP^® SoC

Calterah high-performance automotive-grade mmWave radar SoC with Radiator on Package (RoP^®), supporting waveguide antennas, ideal for L2/L2+ ADAS applications such as corner radar and forward-looking radar

Partners

Shenzhen Smartcomtech Technology Co., Ltd.

Shenzhen Smartcomtech is a leading provider of plastic metallization application solutions for core RF components of 5G, 6G, mmWave, and satellite communication. With plastic metallization technology as its core, Shenzhen Smartcomtech provides customers with processing services for 4D mmWave automotive radar antennas, including metal precision machining, plastic precision machining, PVD magnetron sputtering, electro/chemical plating, precision mold design and processing, precision injection molding, etc.

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Waveland Technology

Founded in 2023, Waveland Technology (Shanghai) specializes in 3D waveguide antennas for mmWave radar, which are applied to the ADAS and traffic fields. Waveland has collaborated with Calterah in developing a dual-layer antenna demo board based on Calterah’s Alps-Pro chip, which has enhanced the signal stability and detection accuracy of mmWave radar and has been applied to forward-looking radar for ADAS and 4D imaging radar.

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Gapwaves

Founded in 2011, Gapwaves boasts end-to-end capabilities in mmWave antenna design, validation, and production. Gapwave uses its proprietary gap waveguide technology to design antennas and delivers high-quality waveguide antennas that can be mass-produced after validation in a laboratory environment. Currently, Gapwaves offers two types of waveguide antenna products: one based on injection molding and the other based on an all-metal manufacturing process.

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Elektrobit

Elektrobit is a global vendor of embedded and connected software products and services for the automotive industry. Its software powers over 5 billion devices in more than 600 million vehicles and its flexible and innovative solutions serve car infrastructure software, connectivity and security, autonomous driving and related tools, as well as user experience. Elektrobit and Calterah have partnered to deliver a pre-integrated EB tresos Classic AUTOSAR solution. By providing developers with out-of-the-box support at the chip level, the solution enables OEMs to focus on algorithm innovations and reduces up to 70% of low-level development, thus accelerating the time-to-market for mass production of next-generation radar systems.

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iSOFT Infrastructure Software Co. Ltd.

iSOFT is the world’s first Chinese enterprise to have made its automotive operating systems open-source. It is dedicated to providing Chinese OEMs and suppliers of automotive parts with a full lifecycle toolchain covering the design, development, configuration, integration, and testing of automotive software, localized one-stop services, as well as ecological support for automotive chips. iSOFT and Calterah will collaborate to develop solutions integrating “China Chips” and “China Software”, jointly exploring emerging market opportunities. Through strategic integration and sharing of customer resources, the partnership will help foster mutual business development.

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