一次CAT62的译码过程

1. CAT

0 = 0b00111110

V=62,十进制


2. LEN

1 = 0b00000000
2 = 0b01011010

V=90,十进制


3. FSPEC

3 = 0b10111111

F1 F2 F3 F4 F5 F6 F7 FX
1 0 1 1 1 1 1 1

4 = 0b01001101

F8 F9 F10 F11 F12 F13 F14 FX
0 1 0 0 1 1 0 1

5 = 0b00100110

F15 F16 F17 F18 F19 F20 F21 FX
0 0 1 0 0 1 1 0

4. Data Fields

4.1 F1 Data Source Identifier

6 = 0b10010000
7 = 0b10010000

V=Turkmenistan, 由于是欧洲标准,所以没有亚洲国家,选择土库曼斯坦,SAC SIC 查询地址为:https://www.eurocontrol.int/services/system-area-code-list

4.2 F3 Service Identification

8 = 0b00000001

The service identification is allocated by the system

4.3 F4 Time Of Track Information

9 = 0b00101110
10 = 0b10011000
11 = 0b01011001

V=063736, UTC时间为063736,北京时间为143736,十进制的值乘以1/128s

4.4 F5 Calculated Track Position (WGS-84)

12 = 0b00000000
13 = 0b01001111
14 = 0b01011000
15 = 0b01110000
16 = 0b00000001
17 = 0b00100111
18 = 0b11101111
19 = 0b11101110

LAT=27.8948879241943, LON=104.040431, 十进制的值乘以180/2exp(25),12-15是纬度,16-19是经度

4.5 F6 Calculated Track Position (Cartesian)

20 = 0b00000000
21 = 0b01000110
22 = 0b11011111
23 = 0b11110110
24 = 0b11101100
25 = 0b01011000

4.7 F7 Calculated Track Velocity (Cartesian)

26 = 0b00000001
27 = 0b11010011
28 = 0b00000011
29 = 0b01101111

4.8 F9 Track Mode 3/A Code

30 = 0b00000111
31 = 0b01010011

(V)=0, (G)=0, (CH)
code1=011=3, code2=101=5, code3=010=2, code4=011=3

4.9 F12 Track Number

32 = 0b00000000
33 = 0b01000110

V=70

4.10 F13 Track Status

34 = 0b00000001

MON SPI MRH SRC SRC SRC CNF FX
0 0 0 0 0 0 0 1

35 = 0b00010001

SIM TSE TSB FPC AFF STP KOS FX
0 0 0 1 0 0 0 1

36 = 0b00000001

AMA MD4 MD4 ME MI MD5 MD5 FX
0 0 0 0 0 0 0 1

37 = 0b00000000

CST PSR SSR MDS ADS SUC AAC FX
0 0 0 0 0 0 0 0

4.11 F17 Measured Flight Level

38 = 0b00000001
39 = 0b00100011

V=0000000100100011=291*1/4FL=72.75FL

4.12 F20 Calculated Rate Of Climb/Descent

40 = 0b00000000
41 = 0b00000000

V=0*6.25feet/minute

4.13.1 Primary Subfield

42 = 0b11011111

TAG CSN IFI FCT TAC WTC DEP FX
1 1 0 1 1 1 1 1

43 = 0b10101000

DST RDS CFL CTL TOD AST STS FX
1 0 1 0 1 0 0 0

over, next table is deprecated

STD STA PEM PEC 0 0 0 FX
0 0 0 0 0 0 0 0

4.13.2 Subfield

4.13.2.1 TAG

44 = 0b00000000
45 = 0b00000000

V=0

4.13.2.2 CSN

46 = 0b01000011
47 = 0b01000100
48 = 0b01000111
49 = 0b00110100
50 = 0b00111000
51 = 0b00110111
52 = 0b00110100

V=CDG4874, ASCII转码

4.13.2.3 FCT

53 = 0b01101000

GAT/OAT FR1/FR2 RVSM HPR 0
01 10 10 0 0

4.13.2.4 TAC

54 = 0b01000010
55 = 0b00110111
56 = 0b00110011
57 = 0b00110111

V=B737, ASCII转码

4.13.2.5 WTC

58 = 0b01001101

V=M, ASCII转码

4.13.2.6 DEP

59 = 0b01011010
60 = 0b01010000
61 = 0b01010000
62 = 0b01010000

V=ZPPP, ASCII转码

4.13.2.7 DST

63 = 0b01011010
64 = 0b01010011
65 = 0b01001010
66 = 0b01001110

V=ZSJN, ASCII转码

4.13.2.8 CFL

67 = 0b00000000
68 = 0b00000000

V=0*1/4FL

4.13.2.9 TOD

69 = 0b00000101

REP=5, 重复5次

4.13.2.9.1 第1次

70 = 0b00001000
71 = 0b00000000
72 = 0b00000000
73 = 0b10000000

TYP=1=EOBT
DAY=0=TODAY
HOR=0
MIN=0
AVS=1
SEC=16

4.13.2.9.2 第2次

74 = 0b00010000
75 = 0b00000000
76 = 0b00000000
77 = 0b10000000

TYP=2=ETD
DAY=0=TODAY
HOR=0
MIN=0
AVS=1
SEC=0

4.13.2.9.3 第3次

78 = 0b00111000
79 = 0b00000000
80 = 0b00000000
81 = 0b10000000

TYP=7=ATOT
DAY=0=TODAY
HOR=0
MIN=0
AVS=1
SEC=0

4.13.2.9.4 第4次

82 = 0b01000000
83 = 0b00000000
84 = 0b00000000
85 = 0b10000000

TYP=8=ETA
DAY=0=TODAY
HOR=0
MIN=0
AVS=1
SEC=0

4.13.2.9.5 第5次

86 = 0b01010000
87 = 0b00000000
88 = 0b00000000
89 = 0b10000000

TYP=10=ALDT
DAY=0=TODAY
HOR=0
MIN=0
AVS=1
SEC=0

5. FRN列表

FRN Data Item Information Length
1 I062/010 Data Source Identifier 2
2 - Spare -
3 I062/015 Service Identification 1
4 I062/070 Time Of Track Information 3
5 I062/105 Calculated Track Position (WGS-84) 8
6 I062/100 Calculated Track Position (Cartesian) 6
7 I062/185 Calculated Track Velocity (Cartesian) 4
FX1 - Field extension indicator -
8 I062/210 Calculated Acceleration (Cartesian) 2
9 I062/060 Track Mode 3/A Code 2
10 I062/245 Target Identification 7
11 I062/380 Aircraft Derived Data 1+
12 I062/040 Track Number 2
13 I062/080 Track Status 1+
14 I062/290 System Track Update Ages 1+
FX2 - Field extension indicator -
15 I062/200 Mode of Movement 1
16 I062/295 Track Data Ages 1+
17 I062/136 Measured Flight Level 2
18 I062/130 Calculated Track Geometric Altitude 2
19 I062/135 Calculated Track Barometric Altitude 2
20 I062/220 Calculated Rate Of Climb/Descent 2
21 I062/390 Flight Plan Related Data 1+
FX3 - Field extension indicator -
22 I062/270 Target Size & Orientation 1+
23 I062/300 Vehicle Fleet Identification 1
24 I062/110 Mode 5 Data reports & Extended Mode 1 Code 1+
25 I062/120 Track Mode 2 Code 2
26 I062/510 Composed Track Number 3+
27 I062/500 Estimated Accuracies 1+
28 I062/340 Measured Information 1+
FX4 - Field extension indicator -
29 - Spare -
30 - Spare -
31 - Spare -
32 - Spare -
33 - Spare -
34 RE Reserved Expansion Field 1+
35 SP Reserved For Special Purpose Indicator 1+
FX5 - Field extension indicator -

6. Aircraft Derived Data 列表

FRN Data Item Information Length
1 ADR Target Address 3
2 ID Target Identification 6
3 MHG Magnetic Heading 2
4 IAS Indicated Airspeed / Mach No 2
5 TAS True Airspeed 2
6 SAL Selected Altitude 2
7 FSS Final State Selected Altitude 2
FX1 - Field extension indicator -
8 TIS Trajectory Intent Status 1+
9 TID Trajectory Intent Data 16
10 COM Communications/ACAS Capability and Flight Status reported by Mode-S 2
11 SAB Status reported by ADS-B 2
12 ACS ACAS Resolution Advisory Report 7
13 BVR Barometric Vertical Rate 2
14 GVR Geometric Vertical Rate 2
FX2 - Field extension indicator -
15 RAN Roll Angle 2
16 TAR Track Angle Rate 2
17 TAN Track Angle 2
18 GSP Ground Speed 2
19 VUN Velocity Uncertainty 1
20 MET Met Data 8
21 EMC Emitter Category 1
FX3 - Field extension indicator -
22 POS Position 6
23 GAL Geometric Altitude 2
24 PUN Position Uncertainty 1
25 MB MODE S MB DATA 9
26 IAR Indicated Airspeed 2
27 MAC Mach Number 2
28 BPS Barometric Pressure Setting (derived from Mode S BDS 4,0) 2
FX4 - Field extension indicator -