ProMark2 Ashtech GPS- .
ProMark 2 ( ) , ( WAAS EGNOS). ProMark 2 - .
ProMark 2
ϳ GPS-
, Stop-and-go,
() -
: 0.005 + 1 /
: 0.010 + 2 /
() Stop-and-go
: 0.012 + 2.5 /
: 0.015 + 2.5 /
()
<3 ( WAAS)
5 ( WAAS, EGNOS)
( )
20
20
Stop-and-go ( )
10
-
- 20 60 .,
Stop-and-go
-15 .
Stop-and-go
15 .
5 .
GPS
10
WAAS/EGNOS
2
GPS-
10º
1 999 .
³ 10 +60º C
2 , ͳ ó ˳
(2 ):
8 . , ͳ ó, 20º
13 ., ˳ 20º
+ (6 ):
24 ., ͳ ó, 20º
39 ., ˳ 20º
ᒺ '
8 72 .
100
14 10 2 .
: -10º, ProMark2 . , , . - 20º ProMark2.
ProMark2 :
GPS- ProMark2. GPS- . ProMark2 .
GPS-, . , .
ProMark2 . ProMark2 . .
|
|
|
, . 3 (7,62 ).
. -, GPS- ProMark2 . -, ProMark2. , ProMark2.
GPS- . ʳ . , .
ProMark2.
ProMark2 ' GPS- . ProMark2 , .
stop-and-go . 5 .
GPS- Ashtech Solutions GPS-, GPS ProMark2 .
.
г
, - r = r, - , r = ra (. 3.2).
. (3.1) ' : 
³ , .
- ( = 0), ( i = 0), 24 , .
1945 . ' , -. 볿 (. 3.3).
, 35 786 . . .
, . . 
UT (Universal Time). , , , ,
.
() , -
|
|
|
. 1928 . III
̳ .
" ", 12 ,
.
,
:
UT0 - ,
;
UT1 - ,
. ;
UT2 - UT1 ;
UT1R - UT2 .
.
- () ,
( ), 1 / 86 400
1 1900
GPS-
.
³ -
.
5 + 2 ´ 10-7 D
7 + 3 ´ 10-7 D . -1,
. -1
.
' 100 2
.
'. ³ 60 .
' 40 .
()
' . '
.
, . ³
60 .
.
() ,
.
'
(- ) '
.
' 100 2
,
' '. '
.
, ,
1,5-2 .
', ,
5 , '
5 .
, '.
9.-39. .
, , UT (. Universal Time) - , . (GMT), (UTC). 1 1925. [1] " " , , UT1 UTC (. ). ' ( ), , .
|
|
|
:
UT0 - , , ̳ . UT0 . , , , UT0 . UT0, , . UT0 .
UT1 - . 0, , UT1 , (ICRS). ICRS (ERA), (GMST). UT1 :
E R A = 2π (+0,7790572732640 + 1,00273781191135448 T u) [],
T u = J D U T 1 - 2451545,0, J D U T 1 - UT1 [2].
UT0 UT1 .
UT1R - UT1, . UT1R 62 5,6 18,6 [3].
UT2 - UT1, . UT2 , - . UT2 :
U T 2 = U T 1 + 0,022 sin (2π t) - 0,012 cos (2π t) - 0,006 sin (4π t) + 0,007 cos (4π t) [],
t - [4].
UT2R - UT1, ( UT2), ( UT1R). UT2R - ' , .
UTC ( ) - , UT1. , . UTC Ѳ, UTC (TAI). UTC 86400 Ѳ, UTC UT1 0,9 30 31 (, , ) . ( 2009 ) . , 1 UTC UT1. UTC , . г UT1 UTC, DUT1 (DUT1 = UT1-UTC), IERS (Bulletin - A).
