When we start learning something new it always comes to our mind that why we should learn it? what are the advantages and how can help me to achieve my goals? Comment below why you want to learn it in the comment box. If you are a complete beginner or you want to learn drone mapping in-depth then this Step by step Drone mapping series is for you.

First, we will discuss what is land Surveying? Why to do it? different instruments to do it and why you should use drones for land surveys instead of traditional methods? If you haven’t subscribed to our channel consider subscribing it.

Drone Mapping @ Pilot Institute

What is Land Surveying?

If I will explain land survey in a simple way then its means that Taking the measurement of any two points in earth surface to measure the relative distance between them or finding elevation and angle between them.

https://www.youtube.com/watch?v=_SWVl_ukd8I

Now the question arises in our mind that why to do land survey and how its help? why the government and private individuals are conducting Land surveys? We will discuss this in detail.

Why to do land survey?

There are 2 basic Purposes of Land surveying, first – Land Planning and second is Creating Maps.

When the survey is executed in a small area there basic purpose may be to determine its boundary and after the boundary has been determined surveyor will plan for construction of a building, hotels, park etc or maybe to determine the owner actual property on the ground.

Land Survey https://www.youtube.com/watch?v=_SWVl_ukd8I

When the survey is executed for the large area then their basic purpose may be to create updated maps for example if the survey is conducted for the whole village, districts or state then the purpose may be to create the latest maps. So this is the objective of the Land survey.

History of Land Survey?

Now let’s talk about the history of the land survey, It is quite probable that surveying had its origin in ancient Egypt. The Great Pyramid of  Giza was built in about 2700 bc.  Its nearly perfect squareness and north-south orientation affirm the ancient Egyptians’ command of surveying. Let’s talk about another example.

History- https://www.youtube.com/watch?v=_SWVl_ukd8I

This is a groma surveying tool, It comprised a vertical staff with horizontal cross-pieces mounted at right angles on a bracket which was used in the 1st millennium BC. It was used to survey straight lines and right angles. The Romans were known for building perfectly straight roads and were able to do so without the modern surveying tools or machinery used today, They use groma tools for it.

Groma Tool – https://www.youtube.com/watch?v=_SWVl_ukd8I

Hence its proves that land survey plays an important role in construction even in the ancient age.

Surveying Instrument

These are the instrument which has been used traditionally for land surveying.

Alidade

Alidade

The alidade is possibly one of the oldest known mapping instruments. The alidade is used for determining the directions of objects and is commonly deployed in detailed surveys (q.v.). especially plane table, mapping.

Dumpy Level

Dumpy Level

A dumpy level is an optical instrument used to establish or checkpoints in the same horizontal plane. It is used in archaeological surveying to measure horizontal levels, for example, to demonstrate the difference in height at the top and base of a slope such as an excavated pit or a surviving earthwork.

Engineering Chain

A distance measuring device used in land surveying consists of a series of links.

Graphometer

The graphometer, semicircle or semicircumferentor is a surveying instrument used for angle measurements.

Measuring Tape

tape measure or measuring tape is a flexible ruler used to measure size or distance.

Tape

Pole

In surveying, a pole is a bar made of wood or metal and normally held vertical, upon which different instruments can be mounted: a prism, a GPS device, etc.

Prism

Optical Survey prisms are specially designed retro reflectors, specifically corner reflector, that is used to reflect the Electronic Distance Measurement (EDM) beam from a total station. A survey prism reflects the EDM beam back to its source with both a wide-angle of incidence and with high precision. Prisms reduce the scatter of the beam as it is reflected back to the total which allows for both more accurate measurement and a longer range that the measurement can be made.

Prismatic compass

prismatic compass is a navigation and surveying instrument which is extensively used to find out the bearing of the traversing and included angles between them, waypoints (an endpoint of the course) and direction.

Theodolites

Theodolites are precision instruments used for measuring angles in the horizontal and vertical planes.

Total Station

A total station is an optical instrument commonly used in construction, surveying and civil engineering. It is useful for measuring horizontal angles, vertical angles and distance.

Total Station

DGPS

The majority of data collected using GPS for GIS is differentially corrected to improve accuracy. The underlying premise of differential GPS (DGPS) is that any two receivers that are relatively close together will experience similar atmospheric.

DGPS

Lidar

Lidar, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth.

Training courses for drone mapping

The drone mapping industry may be worth considering for those who are looking to get into professional drone work. There may be a lot of potential opportunities out there for those who have the right skills and equipment.

The barrier to drone mapping can be quite steep but this is easily one of the most lucrative industries for drone pilots. Hopefully, the tips we have provided here are enough.

For more specialized skills, you can sign up for our Drone Mapping Beginner Guide in Hindi and English. It covers the basics of drone mapping technology and provides basic terminology, Flight Planning, Data acquisition, Drone Flying and image processing.

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