[skzv]

It has a shorter wavelength so the correlation peaks are more narrow and hence more easily distinguishable. See this illustration [0] taken from this article [1]

[0] https://insidegnss-com.exactdn.com/wp-content/uploads/2021/0...

[1] https://insidegnss.com/end-game-for-urban-gnss-googles-use-o...