USGS

Venus Mapping White Paper

Open-File Peport 95-519

Table 1A

Venus latitude, left-looking incidence angle, and Muhleman correction in decibels. South latitudes are negative, north latitudes are positive.

[correction factor can be added to Magellan normalized cross section values to obtain backscatter coefficient ].

Lat
Ang
Factor
Lat
Ang
Factor
Lat
Ang
Factor
-90
*****
******
-30
32.78
-14.28
30
42.10
-17.01
-89
*****
******
-29
33.34
-14.46
31
41.71
-16.91
-88
*****
******
-28
33.88
-14.63
32
41.33
-16.80
-87
*****
******
-27
34.42
-14.80
33
40.96
-16.70
-86
*****
******
-26
34.96
-14.96
34
40.60
-16.60
-85
*****
******
-25
35.48
-15.12
35
40.12
-16.47
-84
*****
******
-24
36.01
-15.28
36
39.64
-16.34
-83
*****
******
-23
36.53
-15.44
37
39.19
-16.21
-82
*****
******
-22
37.06
-15.60
38
38.76
-16.09
-81
*****
******
-21
37.59
-15.75
39
38.33
-15.97
-80
*****
******
-20
38.13
-15.91
40
37.85
-15.83
-79
*****
******
-19
38.65
-16.06
41
37.35
-15.68
-78
14.56
-6.37
-18
39.13
-16.19
42
36.85
-15.54
-77
15.11
-6.70
-17
39.56
-16.32
43
36.36
-15.39
-76
15.66
-7.02
-16
40.01
-16.44
44
35.88
-15.25
-75
16.23
-7.34
-15
40.50
-16.58
45
35.40
-15.10
-74
16.80
-7.65
-14
40.89
-16.68
46
34.90
-14.95
-73
17.22
-7.88
-13
41.28
-16.79
47
34.40
-14.79
-72
17.63
-8.10
-12
41.68
-16.90
48
33.90
-14.63
-71
18.02
-8.30
-11
42.08
-17.01
49
33.38
-14.47
-70
18.40
-8.49
-10
42.43
-17.10
50
32.85
-14.30
-69
18.76
-8.67
-9
42.81
-17.20
51
32.32
-14.13
-68
19.04
-8.81
-8
43.18
-17.30
52
31.80
-13.95
-67
19.32
-8.95
-7
43.45
-17.37
53
31.30
-13.79
-66
19.56
-9.07
-6
43.75
-17.45
54
30.80
-13.62
-65
19.79
-9.18
-5
44.04
-17.52
55
30.30
-13.45
-64
20.01
-9.29
-4
44.33
-17.60
56
29.80
-13.27
-63
20.16
-9.36
-3
44.59
-17.67
57
29.30
-13.10
-62
20.31
-9.43
-2
44.81
-17.72
58
28.86
-12.94
-61
20.49
-9.51
-1
45.00
-17.77
59
28.43
-12.78
-60
20.70
-9.61
0
45.18
-17.82
60
28.00
-12.63
-59
20.91
-9.71
1
45.35
-17.86
61
27.55
-12.46
-58
21.13
-9.81
2
45.49
-17.90
62
27.09
-12.29
-57
21.34
-9.91
3
45.62
-17.93
63
26.64
-12.11
-56
21.56
-10.01
4
45.74
-17.96
64
26.22
-11.95
-55
21.81
-10.12
5
45.85
-17.99
65
25.82
-11.80
-54
22.07
-10.23
6
45.96
-18.01
66
25.42
-11.64
-53
22.33
-10.35
7
46.00
-18.02
67
25.03
-11.48
-52
22.64
-10.48
8
46.00
-18.02
68
24.66
-11.34
-51
22.95
-10.62
9
46.00
-18.02
69
24.30
-11.19
-50
23.28
-10.76
10
46.00
-18.02
70
23.94
-11.04
-49
23.63
-10.91
11
46.00
-18.02
71
23.61
-10.90
-48
23.98
-11.06
12
45.94
-18.01
72
23.29
-10.76
-47
24.34
-11.20
13
45.86
-17.99
73
22.96
-10.62
-46
24.77
-11.38
14
45.79
-17.97
74
22.64
-10.48
-45
25.19
-11.55
15
45.72
-17.95
75
22.31
-10.34
-44
25.62
-11.72
16
45.61
-17.93
76
21.99
-10.20
-43
26.08
-11.90
17
45.49
-17.90
77
21.67
-10.05
-42
26.55
-12.08
18
45.36
-17.86
78
21.32
-9.90
-41
27.02
-12.26
19
45.18
-17.82
79
20.98
-9.74
-40
27.49
-12.44
20
44.99
-17.77
80
20.63
-9.58
-39
27.98
-12.62
21
44.78
-17.72
81
20.28
-9.42
-38
28.46
-12.80
22
44.55
-17.66
82
19.93
-9.25
-37
28.95
-12.97
23
44.32
-17.60
83
19.57
-9.08
-36
29.49
-13.16
24
44.03
-17.52
84
19.15
-8.87
-35
30.02
-13.35
25
43.73
-17.44
85
18.72
-8.66
-34
30.56
-13.53
26
43.42
-17.36
86
18.29
-8.44
-33
31.11
-13.72
27
43.12
-17.28
87
17.83
-8.20
-32
31.67
-13.91
28
42.80
-17.20
88
17.36
-7.96
-31
32.22
-14.09
29
42.45
-17.10
89
16.90
-7.71