대학원 지구정보학 시험

강원대학교 지구물리학과 이훈열 교수

2015년 10월 21일(수) 13:00~15:50

Prove the following characteristics of Fourier integral and inverse Fourier integral.

(a) Linearity:

(b) Symmetry:

(c) Time scaling:

(d) Frequency Scaling:

(e) Time shifting:

(f) Frequency shifting:

Graphically demonstrate the convolution and correlation of the following two functions by applying folding, displacement, multiplication and integration, if applicable.

Graphically demonstrate the time-convolution theorem by completing the frequency domain missing in the bottom of the following graph.

Complete the following graphical development of the discrete Fourier transform by filling the boxes 1) ~ 4).

Write down the definition of GIS.

Describe the relationships among the earth ellipsoid, geoid and the earth itself.

What is the UTM?

Categorize the map projection methods according to the shape of the projection plane, the location of the light source, and the position of the contact between the earth ellipsoid and the projection plane.

Explain the difference between DEM and TIN.

Explain the general procedures for drainage analysis when a DEM is given as an input.

Thank you for your participation.