There has been some work on resolving multipath errors with indirect ToF, Chronoptics (I'm a cofounder) recently licensed our technology to Melexis in automotive.

Here's a blog post I wrote about resolving multipath https://medium.com/chronoptics-time-of-flight/multipath-inte...

And a link to the announcement from Melexis https://www.melexis.com/en/news/2021/4mar2021-melexis-announ...