# Name Johannes Chinondo

Topics: Aerial photography, Satellite imagery, Remote sensing Pages: 3 (929 words) Published: April 25, 2015
﻿ Name Johannes Chinondo Student no 45393796 Assignment 03 Subject GGH2603 Unique no 578524

QUESTION 1
1.1 .Straight line distance between the Broham train station and trig beacon is calculated by measuring the map distance which is 9cm then convert it using the scale which is roughly 2degrees 30minutes in actual distance(2⁰30′) 1.2 .Area of a rectangle is L multiplied by W (L×w)which is 12cm ×6.5cm We convert first both length and width to real distance

Which is 12÷ (1×25000) ×6.5÷ (1×25000)
= (12×25000)× (6.5×25000)
=300 000 ×162 500
=487500m
=4875square kilometre

1.3 .The absolute location of a place is the immediate position which can be figured by the use of numbers to accurately state the position of a place. In this question the spot height 873 in block j7 is located at 30⁰58′E 25⁰29′S

1.4.4⁰45′
1.5 first you draw a line to link spot height 1027 in block C6 and trig beacon 97 in block C5 and then draw a slanting line which join beacon 97 and the straight line in the foot of the spot height 1027 gradient =rise⁄step=3.5cm⁄2cm=1.75cm The gradient between spot height 1027 and trig beacon 97 = 1.75cm Question 2

2.1 scale of the aerial photographs =focal length⁄ flight altitude=91.2mm⁄4900000mm= 2.2 To find the actual height of the warehouse building in meters, one needs to convert all the measurements given into meters and for us to able to convert these we need a scale first Formulafor scale = focal length⁄ flight altitude which is =95.3mm⁄5180m We convert 5180 to mm which is =5180000mm

Then reduce the proportion to the list that is 1⁄50000
The scale =1⁄50000
Then we convert the distance between principal point and the summit That...

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