Research on New Techniques for Secondary Surveillance Radar (SSR) Mode S

More than 20 years have passed since the first Secondary Surveillance Radar (SSR) Mode S ground station was deployed in Japan. SSR Mode S operational environment has been changing, and SSR Mode S is required to suit the environment. In this research, we are going to research two techniques. The first technique enables SSR Mode S ground stations to operate cooperatively with multiple ground stations. The second technique elicits new downlink aircraft parameters (DAPS) from aircraft. The new parameters will improve aircraft position prediction in trajectory-based operations.