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ODC721S - GEODESY - 1ST OPP - NOV 2024 |
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nAmlBIA UnlVERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF ENGINEERINGAND THE BUILTENVIRONMENT
DEPARTMENTOF LANDAND SPATIALSCIENCES
QUALIFICATIONS:
BACHELOROF GEOMATICS
QUALIFICATIONSCODES:
07BGEO
COURSECODE:ODC721S
DATE: November 2024
DURATION: 3 HOURS
QUALIFICATION LEVEL:
Level 7 - 07BGEO
COURSENAME: Geodesy
PAPER:THEORY
MARKS: 100
EXAMINER:
MODERATOR:
FIRSTOPPORTUNITYEXAMINATION QUESTION PAPER
Dr J. Odumosu
Dr K. Owolabi
INSTRUCTIONS
1. Answer all question.
2. Write clearly and neatly.
3. Marks will be deducted for poor writing, spelling and grammatrical errors.
4. Number the answers clearly.
5. Make sure your Student Number is on the EXAMINATION BOOK(s).
THIS QUESTIONPAPERCONSISTSOF 3 PAGES(Including this front page)
PERMISSIBLEMATERIAL
Calculator
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Geodesy
QUESTION 1
1.1 In chronological order, trace the historical evolution of Geodesy
1.2 Discuss on the application of Geodesy to:
(a) Drought surveillance
(b) Earthquake monitoring and plate tectonics assessment
ODC7215
[20 MARKS]
(5 marks]
[8 marks]
(7 marks]
QUESTION 2
[20 MARl<S]
2.1 If the longitude of A is 36° 03' 37" and the LSTis 11hr 31m 17s, find the LST at B whose
longitude is 3° 27' 13".
(6 marks]
2.2 A ship sails eastwards from New York (,1.= 74°W) on 2nd January at 8am LMT and arrives in
= Melborne (,1. 145°£) at 6pm on 12th February. Find the total time taken by the voyage.
(7 marks]
= 2.3 At a certain location (<p 45° 52' 15") stellar observation is intended to be carried out at
8:45pm on 16th August, 2024. If the declination and hour angle of a star (Serius) at the
proposed time of observation is 16° 41' 11" and 49° 51' 12" respectively, calculate the
expected altitude and azimuth of the star at the time of observation.
[7 marks]
Hints:
sin h = cos w. cos P + sin w. sin P. cost
(i)
= cotZ
cot P .sin w- cos w cost
sin t
(ii)
QUESTION 3
[20 MARl<S]
3.1 Given the following geodetic coordinates, find their corresponding cartesian form using the
Bessel (1841) and Clarke {1866) ellipsoidal parameters.
(16 marks]
3.2 Calculate the linear separation between the two points and discuss its implication to local
surveys.
(4 marks]
<p= 40° 07' 04.595 51"
= .>.. 277°01' 10.221 76"
h = 231.562m
Hints:
X = (N + h) cos (/Jcos;t
Y = (N + h) cos cf:>sin ;t
Z = [(1 - f2)N + h]sin</>
First Opportunity Question Paper
Page 2
November 2024
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Geodesy
e2 = 2{-/2
Let N = -J-i--=e2=sn/n=2<f=,
EllipsoidNumc(ycnr computed)
Airy ( 1830)
Evcrcsr ( 1830)
Ucsscl ( 1841)
Clnrkc ( 1866)
ODC721S
Scmi-Mnjor/\\xis. a. Im]
6377563.3%
6377276.34:'i
(1377397.155
6378206.4
InverseFlnttcning.I~/'
299.324964
300.8017
299.152813
294.978698
QUESTION 4
[20 MARKS]
In your own words, discuss extensively on the Namibian Terrestrial Reference Frame. In your
discussion, identify the choice of ellipsoid and reasons for it, and the reference frame itself
(configuration, realization, observational methods, and recent adaptations).
QUESTION 5
[20 MARKS]
You have recorded the following observations from trig beacon Daijobe, to unknown point A
using a theodolite and EDM:
Geodetic Azimuth= 170° 15' 23"
Horizontal distance= 7325.23m (International metre)
Calculate the necessary corrections that must be applied to these observations in order to
calculate the Lo2217 coordinates of Point A. You are required to calculate the final distance and
direction that will be used for the polar calculation, but you do not have to calculate the
coordinates of Point A.
Coordinates:{System: Lo2217)
Trig No. 29 {Daijobe):
Y+97 337.90 X+672 615.20 MSL Elevation: 252.8m
Approximate coordinates of Point A: Y+96098.00 X+,679834.00 MSL Elevation: 210m
i'
'
J•
First Opportunity Question Paper
Page3
November 2024