Life from the air…(Part 1. Preparation of Flight Plans)

Bismillahirrahmaanirraahiim
Bismillahirrahmaanirrahiim

Aerial Photography for Airport Relocation and New Town, Kampar Sub District, Riau Province

Before we flight we must prepare all. First thing is prepare your self (pray to Allah SWT is a must), your survey and mapping equipments (vehicle, plane, camera, etc), and the most important thing is Security Clearance for Survey and Mapping from Department of Defense The Republic of Indonesia. Before we flight we must have flight planning map, like this one.

Flight Planning Map
Flight Planning Map

Details Data Collecting

Vehicle: Plane

Type/Size/Capacity: CESSNA T – 207

Captain: Capt. Rahayu Kuntardi / Capt. Ibnu Safari

Other air crew:

Name

Nationality

Expertise

Otong Nahdudin

Indonesia

Cameraman

M. Rahrul K.A

Indonesia

Cameraman

Bambang Hidayat

Indonesia

Cameraman

Fatwa Ramdani

Indonesia

Remote sensing

Wahyudi Firdaus

Indonesia

Processing

Asep Saepudin

Indonesia

Processing

Technical landing: Halim Perdanakusuma, Jakarta

Commercial landing: Sultan Syarif Kasim II, Riau

Survey Equipment:

Medium Format Camera

Merk: Hasselblad

Type: H2

Gyro Mounting

GPS Geodetic

Area of Survey: Kampar Sub district, Riau Province

Date of survey: October to November 2008

Before all, we have to make Benchmark or Ground Control Point for Orthorectification processing, and horizon control point with minimal three baseline, so strenght of figure (accuracy and assessment) could completed.

USGS Benchmark
Example: USGS Benchmark
Explanatory diagram of the air flights.
Explanatory diagram of the air flights.

To obtain air photography, which is at the base of cartographic work, flights must be defined and prepared. In fact, this activity deals with designing flight plans. The choice of the reference levels, flight altitude and the distance between the flight axes is fundamental, since this will, in fact, determine how successful the shots are at the desired scale. As a consequence, particular care is given to this task. Finally, in order to take advantage of the stereoscopic effect (binocular vision), a minimum overlap of the photographs in the flight path and between paths must be guaranteed. The photographs taken are 23 x 23 cm black and white, and natural color prints, at a scale of 1: 5,700.

The Marking Points or Support and Control Point

Marking the terrain consists of placing markings such as paint crosses at the beginning and the end of the flight axes before the flight actually takes place. These markings will be visible on the air photography. The measured points are made by a rivet placed in the centre of a painted marking in the shape of a 30 x 30 cm square and framed by rectangular blades measuring 30 to 50 cm by 10 to 20 cm. These points are measured using the GPS technique which makes it possible to determine the positioning of these points with great accuracy (to the centimeter). The coordinates of the measured network of points are expressed in World Geodetic Datum 1984 NUTM 47. These markers are used as support for aerial triangulation.

Our Equipment and Studio

Camera Bag
Inside Bag
Camera
GPS Geodetics

Studio
Studio

To be continue…Life from the air…(Part 2. The Fligths and Postprocessing)

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