抄録
This paper describes the effects of GPS equipped aircraft on the global system performance specification defined in the manual on the implementation of reduced vertical separation minima (ICAO Doc 9574). The relationship between the standard deviation of the lateral path-keeping errors and the lateral overlap probability is investigated for the GPS equipped aircraft under several assumptions. The calculated lateral overlap probability is about four times larger than the value described in the manual. The results suggest the need for revising the description of the global system performance specification given in the ICAO manual.
