Marine radar systems operate on specific frequencies to detect targets effectively. Most systems use frequencies in the X-band or S-band, each with its benefits. X-band radar is typically used for short-range detection and offers higher resolution images, making it ideal for close-range navigation and collision avoidance. S-band radar, with a longer wavelength, is better for longer-range detection and is often used in commercial marine applications. Understanding radar frequency helps in selecting the best system for your needs.