Лекции Инженерная геодезия(1 курс)
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. ( 4.1)
1 2 .
.4.1.
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( . 4.2).
.4.2.
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m (m = 10)
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, 4.2.
32,6 .
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4.1.
4.1.
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1:1000 |
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1:5000 |
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4.3. .
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. 1:1000000 ( . 4.4) 4
1:500000 ( ) –N- 37 - ,
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1:200000 I VI, N – 37 –
VI, 144
1:100000, 1 144
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1:10000, 1, 2, 3, 4.
1:10000 – N – 37 – 144 – – – 4.
.4.4.
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1:100000
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1:100000 256
1: 5000,
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–N – 37 – 144-(256).
1:5000
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.4.6.
1: 5000
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1:5000 – 1:500
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(2 2 , 400 ).
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1: 2000 ( , , , ). |
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1:2000 |
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4.6. .
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4.6.1.
S ,
1 n
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1 n
S 2 1 X n (Yn 1 Yn 1 )
n - . .
( . 4.8) 4.2
4.2
X |
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yn+1 - yn-1 |
xn-1 - xn+1 |
xn( yn+1 - yn-1) |
yn(xn-1 - xn+1) |
X1 |
1 |
y2 – y5 |
x5 – x2 |
X1(y2 – y5) |
1(x5 – x2) |
X2 |
2 |
y3 – y1 |
x1 – x3 |
X2(y3 – y1) |
2(x1 – x3) |
X3 |
3 |
y4 – y2 |
x2 – x4 |
X3(y4 – y2) |
3(x2 – x4) |
X4 |
4 |
y5 – y3 |
x3 – x5 |
X4(y5 – y3) |
4(x3 – x5) |
X5 |
5 |
y1 – y4 |
x4 – x1 |
X5(y1 – y4) |
5(x4 – x1) |
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1n = 2S |
1n = 2S |
.4.8.
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4.6.2. .
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4.10 .
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4558. ,
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900)
n1, 4558. |
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n2, 6769. |
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S = n2 - n1 = |
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6769 –4558 =2211 |
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S = (n2 -n1+ Q), Q – .
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1:1000, 10 ,
10000 2.
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C = S . / S . . = 10000 2 / 1000 = 10 2
n2 -n1
4-5 , .
4.3.
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