Sign up for our daily briefing

Make your busy days simpler with the Axios AM and PM newsletters. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on the day's biggest business stories

Subscribe to the Axios Closer newsletter for insights into the day’s business news and trends and why they matter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios Pro Rata

Dive into the world of dealmakers across VC, PE and M&A with Axios Pro Rata. Delivered daily to your inbox by Dan Primack and Kia Kokalitcheva.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with the Axios Sports newsletter. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with the Axios Des Moines newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with the Axios Tampa Bay newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Nashville news?

Get a daily digest of the most important stories affecting your hometown with the Axios Nashville newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Columbus news?

Get a daily digest of the most important stories affecting your hometown with the Axios Columbus newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Dallas news?

Get a daily digest of the most important stories affecting your hometown with the Axios Dallas newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Austin news?

Get a daily digest of the most important stories affecting your hometown with the Axios Austin newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Atlanta news?

Get a daily digest of the most important stories affecting your hometown with the Axios Atlanta newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Philadelphia news?

Get a daily digest of the most important stories affecting your hometown with the Axios Philadelphia newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Chicago news?

Get a daily digest of the most important stories affecting your hometown with the Axios Chicago newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios NW Arkansas

Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top DC news?

Get a daily digest of the most important stories affecting your hometown with the Axios DC newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Illustration: Rebecca Zisser/Axios

Simulation has been critical to speeding up AV development, especially for motion planning and control algorithms. But in these simulations, vehicles are either not perceiving the simulated world at all or perceiving only scenarios that have been previously encountered on the road.

Why it matters: Using these approaches, vast amounts of on-road data will need to be gathered in order to reach the edges of a perception module's capabilities. An additional layer of simulation for AV sensors and perception systems could use synthetic data to accelerate the development of AVs.

Background: AV simulations test different modules of the self-driving software using map data and information about obstacles on the road.

  • In re-simulations, saved data from on-road drives can be fed back through the software. AV engineers can develop test scenarios to benchmark software performance and then compare the results after making updates.

What's needed: Simulating sensor models as well could help in several areas.

  • Optimizing sensor placement on vehicles. Being able to position and visualize the output from sensors is easier and faster using software than real hardware.
  • Creating data sets to train for rare situations. Simulations can model any imaginable scenario, however unlikely.
  • Feeding perception algorithms with synthetic sensor data. This allows engineers to continuously create new scenarios and test their algorithms, rather than waiting for new on-road data.

The catch: Sensor simulation for perception algorithms is difficult because each sensor type (lidar, radar, camera, infrared) has different levels of complexity.

  • In an ideal case, a real hardware sensor’s information could be reproduced using purely software. This requires modeling the underlying physics of each sensor and carefully constructing the 3D environment in which the synthetic sensors “operate.”
  • Synthetic data could then be passed to perception algorithms in a form that they can’t differentiate from real data.

These simulation platforms have to be capable of creating and rendering large photorealistic environments in real time.

  • Sensor tasks add to the load: Properly simulating radar or lidar can require casting millions of synthetic rays per second.

The bottom line: Sensor simulation for perception is still a new process, but could fill an important gap in the development cycle of AV software.

Chris Gundling is a senior software engineer at Applied Intuition, an AV simulation software company.

Go deeper

Updated 4 mins ago - Politics & Policy

Omicron dashboard

Illustration: Brendan Lynch/Axios

  1. Health: Transplants rebound from COVID lull — CDC director says COVID-19 messaging should have been clearer — Concerns grow over CDC's isolation guidelines.
  2. Vaccines: Kids' COVID vaccination rates are particularly low in rural America — America's vaccination drive runs out of gas.
  3. Politics: Joint Chiefs chair Gen. Mark Milley tests positive for COVID-19 — Vivek Murthy calls SCOTUS vaccine mandate block "a setback for public health."
  4. States: America struggles to keep schools open — Youngkin ends mandates for masks in schools and COVID vaccinations for state workers.
  5. World: Greece imposes vaccine mandate for people 60 and older — French parliament passes COVID vaccine passport legislation.
  6. Variant tracker

Mayors feel powerless to reduce homelessness

Expand chart
Recreated from 2021 Menino Survey of Mayors; Chart: Jacque Schrag/Axios

America's mayors know their constituents hold them accountable for homelessness, but many don't feel they have the tools or power to fix things, a brand new survey says.

Why it matters: While homelessness has become more acute during the pandemic, city leaders say they lack the money, staff or political support needed to make a meaningful difference.

Ina Fried, author of Login
3 hours ago - Technology

Microsoft to buy Activision Blizzard

Microsoft

Microsoft announced Tuesday it plans to acquire video game giant Activision Blizzard for $68.7 billion in cash.

Why it matters: The move comes as Activision Blizzard has faced a wave of accusations of workplace harassment.