Okay kiddo, do you know what a camera is? It's like a special eye that can take pictures of things. Well, scientists have made a very special camera that can take pictures of things from way high up in the sky! It's called a SAR camera.
SAR stands for Synthetic Aperture Radar. That's a big fancy name, but all it means is that the camera uses special radio waves to create pictures instead of using light like your eyes do. And because it uses radio waves, it can take pictures even when it's dark or cloudy outside!
Now the cool thing about this SAR camera is that it can take pictures of a really wide area all at once. It's like taking a picture of your whole classroom instead of just your friend sitting next to you. We call that a "wide swath" image because it covers a wide area.
But that's not all! The SAR camera can take pictures that are very detailed too. Imagine if you could see all the tiny little bumps and curves on a leaf, or the wrinkles on your grandma's face. That's what we mean by "high resolution". It's like having a super-duper magnifying glass!
So basically, high resolution wide swath SAR imaging means using a special camera that can take pictures of really big areas from way high up in the sky, and the pictures are super-detailed so we can see all kinds of cool stuff.