Method for determining transition height elements in flight climbing stage based on constant value segment identification

A method for determining transition height elements in a flight climbing stage based on constant value segment identification, comprising a non-transitory computer readable medium operable on a computer with memory for the method for determining transition height elements in the flight climbing stage, and comprising program instructions for executing the following steps of:

• step 1:
• for track data TR={tpii=1, . . . ,n} of one flight, wherein an ith track point tpi is denoted by one vector, tpi=[tsi, spi, mai], tsi, spi and mai respectively denote a time, a speed and a Mach number of the current track point, respectively extracting a speed component and a Mach component from the track TR and recording the two components as a first speed component TRs_raw and a first Mach component TRm_raw;
• wherein, n denotes a total number of track points in the track data TR, and n is a positive integer;
• step 2:
• expanding the first speed component TRs_raw and the first Mach component TRm_raw by adopting a linear interpolation method to obtain a second speed component TRs and a second Mach component TRm;
• step 3:
• discretizing the second speed component TRs of the track to obtain a discrete speed component TRsd;
• step 4:
• filtering each discrete value in the discrete speed component TRsd according to a threshold thr, and acquiring a speed discrete value set SP;
• step 5:
• identifying a constant-speed segment of the flight according to the speed discrete value set SP, and acquiring a maximum constant-speed value spc and a maximum moment tscs of the constant-speed segment;
• Step 6:
• keeping the Mach component of the track with a time no less than the tscs, in the second Mach component TRm to obtain a third Mach component TRm_cut;
• step 7:
• discretizing the third Mach component TRm_cut of the track to obtain a discrete Mach component TRmd;
• step 8:
• filtering each discrete value in the discrete Mach component TRmd according to the threshold thr to acquire a Mach discrete value set MA;
• step 9:
• identifying a constant-Mach segment of the flight according to the Mach discrete value set MA, and acquiring a constant-Mach value mac corresponding to a minimum moment;
• step 10:
• calculating a transition height Htrans of the flight according to the maximum constant-speed value spc and the constant-Mach value mac corresponding to the minimum moment;
• and
• step 11:
• obtaining a real situation of the flight track and adjusting flying parameters of the flight based on results of the method for determining transition height elements in the flight climbing stage;
• which achieves fuel efficiency by controlling an aircraft in stratosphere with low air resistance, and facilitates real-time adjustment to resolve flight conflicts.