Z-wave detection technology, striving to achieve a major breakthrough, is a very difficult task.
Zhao Yi had researched Z-wave detection technology; the detection technology used on spaceships was developed by him. The application's compression ratio detection method is based on molecules that are difficult to compress. By placing them within the Z-wave range to detect the compression ratio, the overall ratio can be determined.
However, the method of detecting compression ratios has severe limitations; up to now, it can only detect distances within 100 astronomical units.
A hundred astronomical units might sound vast, a hundred times the distance from Earth to the Sun, but in reality, compared to interstellar travel, a hundred astronomical units is still far too short.
The high-powered Z-wave of a spaceship, when operating at maximum power, can allow the vessel to traverse tens of thousands of astronomical units.