Intro to Radio Astro Interferometry by Thompson and Intro to Radio Astro by Burke and Graham-Smith are strong recommendations. Those were the ones I used in my Radio Astro special topic in Uni.

For some more background info, Essential Radio Astronomy open notes hosted by the National Radio Astronomy Observatory [0] are a great resource as well. This was used as an extra resource in my Radio Astro course. The ERA notes were also later extended into a textbook [1], which I haven't used but have heard it's well done.

[0]: https://science.nrao.edu/opportunities/courses/era/ [1]: https://press.princeton.edu/books/hardcover/9780691137797/es...