Terahertz Radar: Auto Safety Innovation

Here⁢ are the relevant facts from the provided text:

* Problem: Current car sensors (radar, lidar, cameras)⁣ are ineffective‍ in certain conditions – specifically fog combined with shining sunlight – leading to accidents (as experienced ‍by Matthew Carey when a friend died in a car ⁢accident).
* Solution: Matthew Carey co-founded Teradar to create a terahertz ⁣imager sensor.
* Terahertz Technology:

* Historically underutilized due⁤ to difficulty transmitting⁤ signals, but recent engineering advancements now allow for transmission⁣ over hundreds of meters.
⁣ * Teradar’s sensor meets the auto industry’s 300-meter distance requirement.
* Offers 20x the resolution⁢ of automotive radar and⁤ works in all weather conditions, at a lower cost than lidar.
* Carey describes it as a “superset ‍of lidar and radar combined.”
* How it works:

* Uses an array of terahertz transmitters to generate electronically steerable beams (no moving parts).
* Sensors measure signal return time and location to create a⁢ point cloud (similar to lidar).
⁤ * Combines elements of radar and camera technology.
* Status:

* Teradar recently “exited stealth” and is testing its technology with carmakers.
⁤* Expected to be in vehicles produced in 2028 – perhaps the first such sensor on ‍the market.
⁣ * Currently working with‍ five carmakers.
* Benefits: ‍Simplicity of radar and resolution of lidar, without the cost and wear-and-tear associated with lidar’s moving parts.