	US 11,694,556 B2
	Time-space conversion method of flight sequencing information
Feifei Chen, Nanjing (CN); Ke Xu, Nanjing (CN); Yibo Ding, Nanjing (CN); Mingwei Zhang, Nanjing (CN); Hui Ding, Nanjing (CN); Ming Tong, Nanjing (CN); Xiaozhu Shi, Nanjing (CN); Yang Zhang, Nanjing (CN); Jibo Huang, Nanjing (CN); Wenyi Tang, Nanjing (CN); Zeyuan Liu, Nanjing (CN); Qingqing Tan, Nanjing (CN); and Weiyu Jiang, Nanjing (CN)
Assigned to THE 28TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION, Nanjing (CN)
Filed by THE 28TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION, Nanjing (CN)
Filed on Aug. 10, 2022, as Appl. No. 17/818,955.
Application 17/818,955 is a continuation of application No. PCT/CN2022/101839, filed on Jun. 28, 2022.
Claims priority of application No. 202210372725.8 (CN), filed on Apr. 11, 2022.
Prior Publication US 2022/0392356 A1, Dec. 8, 2022
Int. Cl. G08G 5/00 (2006.01); G01C 21/20 (2006.01)

CPC G08G 5/0026 (2013.01) [G01C 21/20 (2013.01)]

8 Claims

1. A time-space conversion method of flight sequencing information, comprising a computer readable medium operable on a computer with memory for the time-space conversion method, and comprising program instructions for executing the following steps of:

step 1: sequencing and spacing a flight; and generating a sequencing time and a delay suggestion of the flight in each key point in a terminal area and each runway;

step 2: allocating a flight segment delay; and predicting a flight status of the flight according to a current position and 4D trajectory information of the flight, and filtering a delay-consumed flight segment, and on that basis, generating a flight segment delay allocation strategy with reference to an aircraft performance and sequencing information, and obtaining a flight segment delay allocation result; wherein the step 2 comprises: predicting the flight status of the flight according to the current position and the 4D trajectory information of the flight, and filtering the delay-consumed flight segment, and on that basis, generating the flight segment delay allocation strategy with reference to the aircraft performance and the sequencing information, comprising the following steps of:

step 2-1: defining variables;

step 2-2: filtering the delay-consumed flight segment; wherein the step 2-2 comprises the following steps of:

letting Pt_i,bgnbe an origin of the flight segments participating in delay consumption in the flight trajectory point queue PtList_iof the flight Flt_i, and bgn denotes a serial number of the point Pt_i,bgnin the queue PtList_i;

step 2-2-1: positioning an actual flight segment at which the flight is currently located:

positioning the actual flight segment [Pt_i,cur, Pt_i,cur+1] at which the flight Flt_iis currently located according to the estimated passing time ETO_i,jof each point Pt_i,jin the flight trajectory point queue PtList_iof the flight Flt_i, and satisfying that SysTime∈[ETO_i,cur, ETO_i,cur+1]; wherein, Pt_i,curdenotes an origin of the actual flight segment at which the flight Flt_iis currently located, and Pt_i,cur+1denotes an end point of the actual flight segment at which the flight Flt_iis currently located; cur denotes a serial number of the point Pt_i,curin the queue PtList_i, and cur+1 denotes a serial number of the point Pt_i,cur+1in the queue PtList_i; ETO_i,curdenotes an estimated passing time of the flight Flt_iat the point Pt_i,cur, and ETO_i,cur+1denotes an estimated passing time of the flight Flt_iat the point Pt_i,cur+1;

step 2-2-2: positioning a reference flight segment at which the flight is currently located:

positioning the reference flight segment [Pt_i,ref, Pt_i,ref+1] at which the flight Flt_iis currently located according to the sequencing passing time CTO_i,jof each point Pt_i,jin the flight trajectory point queue PtList_iof the flight Flt_i, and satisfying that SysTime∈[CTO_i,ref, CTO_i,ref+1]; wherein, Pt_i,refdenotes an origin of the reference flight segment at which the flight Flt_iis currently located, and Pt_i,ref+1denotes an end point of the reference flight segment at which the flight Flt_iis currently located; ref denotes a serial number of the point Pt_i,refin the queue PtList_i, and ref+1 denotes a serial number of the point Pt_i,ref+1in the queue PtList_i; CTO_i,refdenotes a sequencing passing time of the flight Flt_iat the point Pt_i,ref, and CTO_i,ref+1denotes a sequencing passing time of the flight Flt_iat the point Pt_i,ref+1;

step 2-2-3: searching for an adjacent sequencing key point in a preceding flight segment:

letting Pt_i,prebe the sequencing key point closest to a current position Pt_i,curin the preceding flight segment [Pt_i,1, Pt_i,cur] of the flight Flt_i, wherein Pre denotes a serial number of the point Pt_i,prein the queue PtList_i;

letting Pt_i,tmpbe an intermediate variable of flight trajectory points of the flight Flt_iin the calculation process of the method, wherein tmp denotes a serial number of the point Pt_i,tmpin the queue PtList_i;

when satisfying that ∃Pt_i,tmp∈[Pt_i,1, Pt_i,cur], and satisfying:

Min{(ETO_i,cur−ETO_i,tmp+1)*PtPro_i,tmp}>0 (1)

letting Pt_i,pre=Pt_i,tmp, and continuously executing step 2-2-4; otherwise, letting Pt_i,pre=Ø, and executing step 2-2-5;

step 2-2-4: judging whether a sequencing key point exists between the actual position of the flight and the reference flight segment:

when satisfying that ETO_i,cur>ETO_i,refand Pt_i,pre∈[Pt_i,ref+1, Pt_i,cur], letting Pt_i,bgn=Pt_i,pre, and executing step 2-2-7; otherwise, continuously executing step 2-2-5;

step 2-2-5: searching for an adjacent sequencing key point in a subsequent flight segment:

letting Pt_i,PtNum_{_i}be the last point in the flight trajectory point queue PtList_iof the flight Flt_i;

letting Pt_i,aftbe the sequencing key point closest to the current position Pt_i,curin the subsequent flight segment [Pt_i,cur+1, Pt_i,PtNum_{_i}] of the flight Flt_i, wherein aft denotes a serial number of the point Pt_i,aftin the queue PtList_i;

when satisfying that ∃Pt_i,tmp∈[Pt_i,cur+1, Pt_i,PtNum_{_i}] and satisfying:

Min{(ETO_i,tmp−ETO_i,cur)*PtPro_i,tmp}>0 (2)

letting Pt_i,aft=Pt_i,tmp; otherwise, letting Pt_i,aft=Pt_i,PtNum_{_i};

step 2-2-6: judging whether the sequencing time of the subsequent sequencing key point has a certain fluctuation, wherein the method comprises:

calculating a difference Div(CTO_i,aft) between the currently allocated sequencing time and the allocated sequencing time during last calculation of the flight Flt_iat the sequencing key point Pt_i,aft, and filtering the origin Pt_i,bgnof the delay-consumed flight segment according to Div(CTO_i,aft), wherein the method is as follows:

for the first operation, letting Div(CTO_i,aft)=0;

step 2-2-7: determining the delay-consumed flight segment:

for the flight Flt_i, the filtered flight segments participating in delay consumption are all the subsequent flight segment from Pt_i,bgnin the flight trajectory point queue PtList_i, which is [Pt_i,bgn, Pt_i,PtNum_{_i}]; and

step 2-2-8: updating a sequencing time of the origin of the delay-consumed flight segment:

for the first calculation, letting a sequencing time of all non-sequencing key points Pt_i,jin PtList_ibe CTO_i,j=ETO_i,j; otherwise, using the last operation result for CTO_i,jof all the non-sequencing key points

step 2-3: dividing the flight segment according to a sequencing key point;

step 2-4: dividing the flight segment according to the flight status; and

step 2-5: allocating the flight segment delay to obtain the flight segment delay allocation result;

step 3: generating a reference trajectory circle; and generating a visual spatial position reference target according to the flight segment delay allocation result and an operation deviation limit; and

step 4: the aircraft is controlled by the time-space conversion method for taking off or landing.