surveying iii (topographic and geodetic surveys) - Modern Prepper

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LESSON 4PRACTICE EXERCISEANSWER KEY AND FEEDBACKItemCorrect Answer and Feedback1. C MSLThe datum universally…(page 4-1, Introduction)2. C BenchmarksBenchmarks are permanent…(page 4-2, para 4-2)3. A Are run in one direction onlyThe criteria for Class II…(page 4-4, para 4-3b[2])4. A 0.001 of a unitA graduated tilting screw…(page 4-5, para 4-5a)5. D Read the bottom wire firstRead the bottom hair…(page 4-9, para 4-5b)6. C Obtain the length of the sections being observedIt is the factor by which…(page 4-10, para 4-8a)7. D 0.002 from the meanIf any of the six individual…(page 4-12, para 4-8a[2])8. B Spacing of the crosshairsThe constant depends upon…(page 4-12, para 4-8a[3])9. C 10 millimetersIf the deviation from…(page 4-15, para 4-8c)10. B 0.003 meterAny time that the…(page 4-16, para 4-9a, third bullet)11. B 75 metersThe maximum length…(page 4-18, para 4-9a[6])12. D Imperfect level adjustmentErrors due to imperfect level…(page 4-18, para 4-9a[7])EN0593 4-38
LESSON 5NAVIGATIONAL SATELLITE AND TIMING GLOBALPOSITIONING SYSTEMOVERVIEWLESSON DESCRIPTION:In this lesson, you will learn to identify the different techniques of GPS.TERMINAL LEARNING OBJECTIVE:ACTION:CONDITION:STANDARD:You will identify the different signals that support the surveyor.You will be given the material contained in this lesson, a number 2 pencil, and acalculator.You will correctly answer all practice questions following this exercise.REFERENCES: The material contained in this lesson was derived from FM 3-34.331.INTRODUCTIONThis chapter provides a general overview of the basic operating principles of the NAVSTAR GPS. TheNAVSTAR GPS is a passive, satellite-based navigation system operated and maintained by the DOD.Its primary mission is to provide passive global positioning or navigation for air-, land-, and sea-basedstrategic and tactical forces. A GPS receiver is simply a range-measurement device. Distances aremeasured between the receiver antenna and the satellites, and the position is determined from theintersections of the range vectors. These distances are determined by a GPS receiver, which preciselymeasures the time it takes a signal to travel from the satellite to the station. This measurement process issimilar to that used in conventional pulsing marine-navigation systems and in phase-comparison EDMland-surveying equipment.5-1 EN0593
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SUBCOURSEEN0593EDITIONAUNITED STATE
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TERMINAL LEARNING OBJECTIVE:ACTION:
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Part G: Adjusting Precise-Positioni
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PART A - FIGURES OF THE EARTH1-1. T
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Figure 1-2. Flattening Fractiona. T
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1-3. Geoid. In geodesy, precise com
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point in the survey to provide the
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one side of a triangle and all of t
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Figure 1-10. Simple Triangulation N
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observation, contains a light sourc
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of a horizontal rod with a small sp
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The Airy theory, announced by G. B.
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Figure 1-15. Products of the Gravim
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a. If the shape of the earth was ex
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Figure 1-16. Single Astronomic Stat
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Figure 1-17. Astro-Geodetic Deflect
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Figure 1-19. Astro-Geodetic Datum O
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(c) The significance of a gravity-o
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absolute deflections of the vertica
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Figure 1-23. Preferred Datumsa. The
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1-17. The World Geodetic System. Be
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Figure 1-25. Using the Same Referen
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LESSON 1PRACTICE EXERCISEThe follow
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12. Which of the following is assum
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LESSON 1PRACTICE EXERCISEANSWER KEY
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THIS PAGE IS INTENTIONALLY LEFT BLA
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for all military and civilian activ
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i. Additional support for other top
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2-7. Status. At present, topographi
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in both. (North American Datum of 1
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water can impede leveling operation
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A field recording booklet. A single
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PART I - OFFICE WORK2-24. General.
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PART J - SURVEY COMMUNICATION2-28.
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length or side is known, and all th
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second-order, Class I net. The leng
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The number of observations required
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to perform the reconnaissance. Fail
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and cultivated, or fields may have
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e an alphanumeric symbol that is st
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2-53. Intervisibility of Stations.
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station is (K/2) 2 x 0.0676, or one
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Figure 2-8. Similar Triangles Solut
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2-54. Height of Obstructions. It is
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authorized to change the name, it s
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Figure 2-12. Cells Connected in Par
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added as the cells weaken. Three un
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Figure 2-16. Construction Details f
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2-60. Wooden Towers. When it become
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11. The face of the 5-inch signal l
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average line in a triangulation sys
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3-4. Slope Measurements. The slope
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strip as close as possible to its f
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. Sight along the tops of both of t
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Column 1. Record the station number
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stake to steady it. With the back o
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Figure 3-3. DA Form 4446 (Sample of
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micrometer in this optical system i
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laterally across the front of the e
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Figure 3-7. Horizontal Circle and M
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out of adjustment. If the index mar
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(1) In order to avoid instrumental
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location of the vertical circle on
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Figure 3-13. Open Traversec. Closed
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Page 138 and 139: example, a line with an azimuth of
Page 140 and 141: When adjusting a traverse that star
Page 142 and 143: LESSON 3PRACTICE EXERCISEThe follow
Page 144 and 145: 11. The unit of graduation on a hor
Page 146 and 147: LESSON 3PRACTICE EXERCISEANSWER KEY
Page 148 and 149: THIS PAGE IS INTENTIONALLY LEFT BLA
Page 150 and 151: differential leveling. The theodoli
Page 152 and 153: additional runs are made due to exc
Page 154 and 155: Figure 4-2. Wild N-3 Precision Leve
Page 156 and 157: (8) Loosen the azimuth clamp (13),
Page 158 and 159: 4.7. Miscellaneous Equipment. In ad
Page 160 and 161: (2) To check for gross errors in th
Page 162 and 163: (a) (1) Begin by completing the inf
Page 164 and 165: Set up and level the instrument. Re
Page 166 and 167: Figure 4-8. Sun and Wind Code(5) Th
Page 168 and 169: (10) Enter the interval between the
Page 170 and 171: Figure 4-9. Closed-Circuit River Cr
Page 172 and 173: Figure 4-11. Sample DA Form 5820 (R
Page 174 and 175: is 0. When the telescope is pointed
Page 176 and 177: stations. However, since all statio
Page 178 and 179: a. Complete the heading, as shown.b
Page 180 and 181: a. (1) Enter the date, as in the sa
Page 182 and 183: LESSON 4PRACTICE EXERCISEThe follow
Page 184 and 185: 11. The maximum length of site to o
Page 188 and 189: PART A - GLOBAL POSITIONING SYSTEM
Page 190 and 191: 5-7. Pseudorange. A pseudorange is
Page 192 and 193: 5-15. Number of Pseudorange Observa
Page 194 and 195: i. Probable Error Measures. The acc
Page 196 and 197: Table 5-1. Representative GPS Error
Page 198 and 199: Table 5-2. Carrier Phase Trackinga.
Page 200 and 201: exercise extreme caution in applyin
Page 202 and 203: not be designed or performed to ach
Page 204 and 205: Table 5-3. GPS-S Design, Geometry,
Page 206 and 207: f. Multiple/Repeat Baseline Connect
Page 208 and 209: possible ionospheric and tropospher
Page 210 and 211: Figures 5-4. PDOP Versus Time PlotP
Page 212 and 213: e. Field Processing and Verificatio
Page 214 and 215: All carrier phase relative-surveyin
Page 216 and 217: time spent and the cost of conducti
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Page 220 and 221: 5-37. General. GPS baseline solutio
Page 222 and 223: (1) Receiver Time. This technique u
Page 224 and 225: NOTE: Repeated baselines should be
Page 226 and 227: 5-43. Loop Closure Checks. Postproc
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Page 230 and 231: This will ensure that future work w
Page 232 and 233: may (and usually does) far exceed t
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i. Relative GPS baseline standard e
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12. When the networking method is s
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THIS PAGE IS INTENTIONALLY LEFT BLA
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FAR-77 obstructions. Aircraft-movem
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Figure 6-1. Imaginary SurfacesEN059
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Figure 6-3. Approach Surfacesa. Fed
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. Federal Aviation Regulation-77, S
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Table 6-4. Airport Obstruction Accu
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A horizontal scale of 1:12,000 and
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Figure 6-4. Sample DA Form 5821 (Ai
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Figure 6-5. Sample DA Form 5822 (PA
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