第二章 水平控制网的技术设计
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1
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* 13km8km
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4
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21 200km16~1725km20km0.7
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2 206015~20km1.213km2.5 206013km1.0
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3 8 km1.82~6km2.5
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(b)
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*(a) (b) aABC
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b
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4
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5 1 2050602040161821217.3km312101km198248433500100031119814040.9m0.464.8cm
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2 GPSGPSGPSGPSABCDEABGPSCDEGPS
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1GPS AB 1991IAGIGSGPS19926-992 GPS A BGPS19915730220050km 100km150km0.1mGPS 2.010e-83.010e-8
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2GPS 3 (CRUSTAL MOVEMENT OBSERVATION NETWORK OF CHINA CMONOC)19962000(GPS)(VLBI)(SLR) GPS 25GPSVLBISLR56GPS1000GPS300700 13500
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1.
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*2. 1:5000.lmm0.1500=5cm
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3.
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4.
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a b c d
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55
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GPS GPS 200m20mm
GPS mm a mm b 110-6 d km
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4.5. GPS
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:
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11 2
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1 ,:
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12
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F
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2
AP
NQ
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21 S0------ S------ ABC----
s
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S
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a f aa af ff 1SctgA 1SctgA 1-SctgB 1-SctgB 1 0 1 0 0 3 S(ctgA-ctgB)
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(2-5)
(2-5) (2-4)(2-5)
(2-6)
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,:
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: ,().
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1:,m=1.8,S?:A=49, B=77,R=4.5,:
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2:,m=1.8,S?:A=30, B=60,R=19.2,:
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2 A=C
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34
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5
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3IV
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4III
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5:,b .S1S2 S1
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6
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3.1) u------ t------ M------ D------ Z------ Q------ C------(1)
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DC 12.LnM
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nLS AB
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(2) ,
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34AB
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6
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6S=2000mn=4
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2 1 2
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31..2.,.3..
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4
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, :
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:N()
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1km, ,:BNCNNN,::
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A---BC,:
NANBCN,N:
NABC,W,(ABC):
AW:
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:,S=1000m, , (M0) L0n0M0
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LiEF
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X
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2.51 AB() 2 ()
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4:
:
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:
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2.6,
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,:,:
,r,n
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S=CPC,,P,,, ,,, ,,,,,,
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,,: ,, ,,,,(), ,, ,
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2.7 1
2
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1
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2 1). 1 2 3 4 5
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2). 1 30 2 3
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125 0001100 000
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3)
1 2 3 4 5 6 7
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2.8 2.8.1
2.8.2
2.8.3
2.8.4
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2.8.1 1 2 3
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2.8.2 s 1.
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2.8.2 2. CAB A B
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2.
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2. s1=4.6kms2=9.5kmHA=62.5mHC=67.5mHB=63.0m2m4m,
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2.8.3 GPS
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11 22ab 31.2m3ab1.
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a b3
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2.
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1/22/30" 40" 20"30" 1/240"
s=4kmd=0.4m 23
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1 O()O120OAOBOC 9010 3.
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3.
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)5630 5630120240
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2 lm 3 90 4
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2.8.4
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8
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1 2 3 ?6 ?4 ?
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5SAB2.5km 140000 68 EFG 2km5cm (1)F (2)
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7 8ABC N L
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9 10 11 12?? 13 14?
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