Intro to Surveying and Mapping

geomatics

measurement, managing, collecting, representing, analysis and displaying of spatial information

spatial information

data that describes the position, size, and shape of objects in three-dimensional space

surveying, geodesy, cartography, remote sensing and photogrammetry, geographic information systems, global positioning systems

topics discussed under geomatics

surveying

art and science of determining angular and linear measurements to establish the form, extent, and relative position of points, lines, and areas on or near the surface of the earth

lol dapat alam mo na yan

what is the difference in meaning for traditional and modern definitions of surveying?

unmanned aerial vehicles like drones

what is a UAV?

surveyor

professional with academic qualifications and technical expertise to practice the science of measurement, etc. etc.

engineer’s field book

contains the official notes/record of survey

remote sensing

the science of obtaining information about objects or areas from a distance, typically from aircraft or satellites

photogrammetry

the process of taking reliable measurements from photographs or a method of approximating a three-dimensional (3D) structure using two dimensional images

geographic informations system

a computer system that analyzes and displays geographically referenced information ex. google maps or built in mapping in phone

global positioning systems

a network of satellites and receiving devices used to determine the location of something on Earth

cartography

the art and science of graphically representing a geographical area, usually on a flat surface such as a map or chart

geodesy

the science of accurately measuring and understanding the Earth's geometric shape, orientation in space, and gravity field

sketches, tabulations, explanatory, computations, combination

types of notes in surveying

sketches

free hand, liberal size, rarely exact scale, features shown by conventional symbols

tabulations

numerical values, organized format, prevents mistakes, allows easy checking

explanatory

written description of what is done sa field, explains numerical data

computations

mostly algebraic, graphical solutions

combination

used in most extensive surveys, mix of two or more types of field notes

title, time of day and date, weather conditions, name of members and designation, list of equipment

what important details should be in the field notes?

chief of party

asst. chief of party

instrument man

technician

data processor

recorder

head tapeman

rear tapeman

flagman

rodman

pacer

axeman/lineman

aidman

utilityman

can you name all designations?

chief of party

estimates cost, expert witness in trials and courts

asst. chief of party

prepares field and office reports and survey plans

instrument man

sets up, levels, and operates transit, level, theodolite, etc.

technician

establishes two way comm link

data processor

computes the survey data

recorder

notes down all data, keeps table of schedules

head and rear tapeman

responsible for accuracy and speed of linear measurement with tape, marks stations, makes sure tapes are standard length

flagman

holds flagpole or range pole at selected points

rodman

holds stationn or leveling rod

pacer

checks all linear measurements

axeman/lineman

clears the line of sight/bodyguard ?

aidman

responsible for first aid

utilityman

assists in everything

2560 BC (10-20 year period)

time period for the pyramids in egypt to be made

for their era’s technology, the base is a perfect square and sides are aligned with the true meridian

what makes the great pyramid of khufu at giza important?

on clay tablets

where did they write down land surveys in babylon?

150 BC, school of surveying

in the roman era what time period was it that they had town planning and where did they do this?

erathostenes

which greek scholar accurately measured the circumference of the earth?

syene and alexandria

what two cities did the greek scholar use to accurately measure the circumference of the earth?

world war 1 and 2

what world events caused significant advancements to land surveying and mapping?

demand in war created a need for more rapid and accurate methods for reconnaissance, strategic planning, and creating detailed maps of both ally and enemy territory

why did the events in the 1900s cause a significant advancement to land surveying and mapping?

control

property

topographic

hydrographic

mine

route

construction

photogrammetric

can you name the types of surveys?

control survey

type of survey: establishes horizontal and vertical of arbitrary points

property survey

type of survey: length and direction of lot lines

topographic survey

type of survey: indicates configuration of terrain, location of natural and man made objects

hydrographic survey

type of survey: bodies of water/navigation

mine survey

type of survey: locate and map underground and surface works

route survey

type of survey: location and construction of lines of transport and communication

construction survey

type of survey: laying out an locating marks for construction activities

photogrammetric survey

type of survey: uses photography and digital imagery to measure distances

total station, satellite positioning systems,

recent technology for surveying

USA - NAVSTAR

RUSSIA - GLONASS

EU - Galileo

satellite positioning systems real life examples

Global Navigation Satellite System

what does GLONASS stand for

Navigation System with Time And Ranging

what does NAVSTAR stand for

Jennieveive B. Babaan - Mabaquiao

what is ma’am beb’s full name lol