Tag Archives: Radar

How to Build a Better Automotive Radar System

By John Blyler – Advanced driver assistance systems (ADAS) rely heavily on modern radar technology. And why not? Radar uses electromagnetic waves to sense the environment. It can operate over a long distance in poor visibility or inclement weather conditions. Designing automotive RF that accurately captures diverse traffic situations will be essential in making autonomous operations safe.

Radar systems are no newcomer to the automotive space. In the past, automotive radar was used in vehicles for basic operations such as automatic emergency braking (AEB) and adaptive cruise control (ACC), where the radar sensor only had to provide the vehicle with information relating to the distance and speed of the target in front of it.

However, recent trends to deploy a fully autonomous vehicle have increased the amount of information that a vehicle demands from the radar sensor. Specifically, after detecting a target, the host vehicle must determine several things, such as the distance to a target – be it another car, a person, a stationary object, or the like. The radar must also calculate how fast the target is approaching or departing; whether it is to the right, left, or straight ahead of the vehicle; on the road or above the ground; and the nature of the target, i.e., pedestrian or vehicle, for example.

Automotive radar technology can provide essential, real-time information to the vehicle’s onboard embedded computers and software algorithms to answer these questions by providing five-dimensional datasets: Range, Doppler, Azimuthal direction of arrival (DoA), Elevation direction of arrival (DoA), and Micro-Doppler.

As vehicles migrate from SAE level 1 to level 5 full autonomy, automotive radar technology will be used for far more than emergency braking and adaptive cruise control with ever-increasing reliability and accuracy demands. more>

NXP Rolls Out Radar Development Platform

By Charles Murray – A new reference platform promises to speed the development time of automotive radar devices for adaptive cruise control, automated braking, and automated steering.

NXP Semiconductors N.V., maker of the new platform, says that it provides engineers with a more direct path to production than any previous product.

“They can kickstart their development activities and accelerate the time it takes to develop a product that can be deployed into production vehicles,” Colin Cureton, senior director of product management for ADAS at NXP Semiconductors, told Design News.

NXP is timing the product rollout for a huge anticipated increase in the use of automotive radar systems. Today, radar is employed in automated braking systems that detect pedestrians and cyclists in front of and behind vehicles, as well as in automated emergency steering, cross-traffic detection, and child detection.

In the near future, many vehicles are expected to deploy radar on the front and rear, as well as on all four corners. NXP predicts that overall use of automotive radar will jump from 24 million units shipped worldwide in 2016 to 168 million units in 2025—a seven-fold increase. more>

Military Radar Comes to Home Security Market

By Kristin Lewotsky – The SPEXER 1000 brings military-class performance to security applications, allowing facilities to monitor a 120° field of view economically across a range as long as 17km (10.6 miles). The complete system is designed for easy installation and integration with command and control systems on stationary and mobile platforms monitoring land, sea, or air.

Conventional radar systems often rotate to cover 360°, but that’s not always necessary in security applications. Often, perimeters can be secured by monitoring specific areas of vulnerability, which speeds up the process while reducing power demand and avoiding the acquisition and processing of unnecessary data. An airport system, for example, could ignore passenger entry points but would need to cover regions at the ends of runways or around the fuel depot. more> http://tinyurl.com/cfwg9xc