what is the meaning of "just as" in this sentence?

"A new survey on the US census just as it gets underway. "

Actually, I cannot understand the structure of this sentence.

I thought that ‘A new survey on the US census’ should be a subject but there is no verb , and a new subject and a verb come right after ‘just as’.

Is there someone who can help me?

Just here means only. What you need to do now is translating other words.

Jeon, this sounds like a headline from a newspaper or Internet article, and we often leave out verbs in those.

“Just as” in this case means something like “at the exact moment when”, so the headline means "There is a new survey on the US census at the exact time when it is starting. "

Thanks, Jamie.
I’m satisfied with your answer.