An approach of fast stations selection algorithm for multilateration surveillance system

Based on the analysis of relationship between the position dilution of precision (PDOP) and number of remote stations for multilateration surveillance system (MLAT), a fast stations selection algorithm applicable for the positioning processing center was presented. In this algorithm, firstly the exponent attenuation model of relationship is built between the PDOP and number of stations, through which the number of selecting stations was determined on the requirement of the positioning precision. Then the center will remove the correspondence visible stations from the stations list according to the fixed station number. At last, the computer simulations demonstrate that this method introduces much lower amount of computation compared to conventional algorithms.