Key takeaways
The core of ADAS sensor testing is "perception without distortion": the EMC line covers emission and immunity (avoiding false and missed detections), the environmental line covers thermal shock, salt spray, water ingress and vibration (avoiding performance degradation). mmWave radar needs emission and response testing under anechoic conditions, while cameras add optical performance items. The mounting position of either sensor — inside the bumper or behind the windscreen — directly determines the ingress protection level and the vibration profile to use.
mmWave radar and automotive cameras are the eyes of an ADAS. They fail differently from conventional electronics — not by refusing to power up, but by seeing wrong: false detections, missed detections, blurred images. Test design has to be built around perception reliability.
1. EMC: first, no false judgement
On the emission side, the radar local oscillator and the camera high-speed interfaces can both interfere with on-board receivers (including the radar itself and the radio), under CISPR 25 / GB 18655. On the immunity side, external field strength and harness-injected disturbance must not make the sensor output phantom targets or noise, under the ISO 11452 series.
Radar emission and response characteristics are usually assessed in an anechoic or microwave chamber to avoid multipath and stray reflections; for cameras the concern is image integrity across the high-speed signal chain under disturbance.
2. Environmental durability: working in all weather
For sensors mounted inside the bumper or on the body exterior, the environmental line usually includes thermal shock (rapid change from cold start to solar soak), salt spray (de-icing salt and coastal exposure), water and dust ingress (exterior parts are typically IP67), and vibration and shock (run to the profile for the mounting position).
Cameras add optical items: luminance and chromaticity stability, glare suppression, and defogging/defrosting at cold start. For radar, the concern is the attenuation and dielectric consistency of the cover material at mmWave frequencies.
3. Mounting position sets the test conditions
Inside the front bumper (salt spray, stone impact, low temperature), behind the windscreen (solar heating, curved-glass optics), in the roof liner (comparatively mild). Establish the mounting position and vehicle type before selection — test levels differ widely, and the customer specification governs.
4. Suggested standard combinations
EMC: CISPR 25 and ISO 11452. Environmental and mechanical: GB/T 28046 and ISO 16750-3. Optical and material items: to the OEM specification. During exploratory development, schedule EMC and environmental work in parallel so both classes of problem surface in one round.
Turnaround time is arranged according to the actual project. You are welcome to state your target date when submitting samples; we will check it against the current schedule, confirm a feasible plan with you, and update you at each milestone.
