Photogrammetry And Remote Sensing

A four-band multispectral image with pixel size of 50 m x 50 m covers a ground area of 20 km × 20 km. If the radiometric resolution of the satellite data is 8 bits, then the uncompressed satellite image contains _______ kilobytes (kB) of data (in integer).

Using the given 3 × 3 pixel kernel and original image and applying the concept of convolution, the value of central pixel of the output image is _____ (in integer).

Which of the following statements about image ratio is/are CORRECT?

Which of the following filters can be used to suppress the low frequency component of a raster image?

Which of the following statistical measures CANNOT be computed from the multispectral image histograms?

For the following covariance matrix (Σ) of a multispectral image, which of the statements is/are INCORRECT?

The figure given below shows the Fourier spectrum obtained by applying filter on a remote sensing image in frequency domain. Zone A represents the location of ________ components.

_______ is a raster image resampling technique that DOES NOT alter any of the output cell values from the input raster dataset.

A one-dimensional normalized kernel is convolved with an image to produce an intermediate result. The intermediate image of this operation is again convolved with the same kernel to produce a final result. The equivalent kernel to achieve the same final result in one step from the original image is given as

A four-band multispectral image of size 64 × 64 pixels has 560 header bytes. The per pixel depth of the image is 2 bytes. The total number of bytes required to store this image on the disk in the Band Interleaved by Line (BIL) format will be

A high tower appeared on an aerial photograph taken at 1000 m above mean sea level with a camera lens of 15 cm focal length. The radial distances of the top and bottom images of the tower from principal point of photograph are 92.6 mm and 78.3 mm, respectively. If the average elevation of terrain is 300 m above mean sea level, then the height of the tower above ground is _________ m (rounded off to the nearest integer).

A line measures 15 cm on an aerial photograph, while it measures 5 cm on a map at 1:24000 scale. The photograph was taken using a camera lens of 20 cm focal length. Average elevation of terrain is 240 m above mean sea level. The flying height of the aircraft above mean sea level is___ m (in integer).

If the longitudinal overlap in aerial photographs is kept as 65%, the common overlap (superlap) between three successive photographs is_________ % (in integer).

Isocentre of a tilted photograph is

Scale of a vertical aerial photograph of an undulating terrain is

"Transit the telescope" of a theodolite involves

Using the following data, the spatial resolution of a push-broom sensor is _________ m (in integer).
Data:
Orbital altitude (above earth surface) = 1000 km
Number of spectral bands = 5
Number of detectors/CCDs (charged coupled devices) in a row = 4000
Ground swath = 20 km

Which of the following parts of the electromagnetic spectrum is/are used in satellite remote sensing for earth observation?

Which of the following CANNOT be used as visual interpretation key(s) for satellite images?

Which of the following statements is/are CORRECT for satellite image interpretation?

Which of the following statements is/are CORRECT?

Which of the following statements is/are CORRECT?

Find the best match between Column A and Column B

Column A	Column B
(P) Radiant flux	(1) Dimensionless
(Q) Radiant energy	(2) Watts
(R) Radiant Exitance	(3) Joules
(S) Reflectance	(4) Watts
	(5) Watts

Find the best match between remote sensing sensors (Column A) with their characteristics (Column B)

Column A	Column B
(P) IRS LISS-III	(1) 36 bands
(Q) Landsat TM	(2) along track scanner
(R) MODIS	(3) across track scanner
(S) Hyperion	(4) 18 bands
	(5) 242 bands

The wavelength at which maximum energy is radiated or emitted from the forest fire at temperature of 700 °C is __________ (rounded off to one decimal place).

Part of the solar radiation incident on the water surface gets refracted as per

Hyperspectral sensor consists of

The approximate altitude (above earth surface) of polar sun-synchronous orbits of ISRO's remote sensing satellites is

Water bodies appear in dark tone in Near Infrared (NIR) image, because water _______ most of the NIR radiations incident on it.