Study on Multistatic Primary Surveillance Radar Using DTTB Signal Delays

This paper presents a new concept of a multistatic primary surveillance radar (MSPSR) that uses digital terrestrial television broadcast (DTTB). We proposed a passive bistatic radar using DTTB signal delay in a previous work. During further study, we found that the system could detect signal delays from moving aircraft. The coverage area of the proposed system was also confirmed by comparing with ADS-B. Thereafter, we expanded the bistatic radar system to a multiple-receiver system, in order to realize MSPSR configuration. In this paper, a surveillance system using two receivers is introduced. First, the basic principle of the MSPSR system using DTTB signal delays is reviewed. Then, a preliminary experiment performed in the Tokyo bay area is presented. Results show that the delayed signals caused by moving aircraft can be detected at the two receivers at the same time. Finally the positional estimation using two receivers is discussed.