List of top Geomatics Engineering Questions

Which of the following factors is/are responsible for ionospheric delay in GNSS observations?
Find the best match between Column A and Column B
Column AColumn B
(P)   Radiant flux (1)  Dimensionless
(Q)    Radiant energy (2)   Watts 
(R)    Radiant Exitance (3)   Joules 
(S)    Reflectance (4)   Watts $m^{ -1}$
 (5)   Watts $m^{ -2} s ^{ -1}$
Find the best match between remote sensing sensors (Column A) with their characteristics (Column B)
Column AColumn 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 
To reduce the slope distance (S) to an equivalent horizontal distance (H) as shown in the figure given below, the following independent observations were taken.
\(S = 29.95 m ± 0.01 m; \theta = 4°30' ± 10' \)
The required precision of computed horizontal distance is ± 0.005 m. Assume a "balanced accuracy" where the contribution to precision of the horizontal distance comes equally from the slope distance and angle measurements. The minimum number of angle observations to achieve the desired precision is 
(Given 1 radian = 206265 seconds) 
To reduce the slope distance (S) to an equivalent horizontal distance (H) as shown in the figure given below, the following independent observations were taken.
Independent angles AOB, BOC and AOC were observed as shown in figure. The standard error of all observations is same. The adjusted values of these angles using the least squares adjustment are
Independent angles AOB, BOC and AOC were observed
In the figure, $ d_1, d_2, d_3$ are three independently measured distances for estimating the unknown distances x and y. The correlation coefficient between the unknown estimates approximately equals to
d1, d2, d3 are three independently measured distances for estimating the unknown distances x and y.
An angle is observed independently twice, and the values are as follows:
60°30'10" ± 10"
60°30′20′′ ± 20"
The most probable value (MPV) of the angle is
The standard error of a unit weight for a set of angle observations is 10". The minimum number of observations required to reduce the standard error of the mean for this set of observations to 2" is ______ (in integer).
The wavelength at which maximum energy is radiated or emitted from the forest fire at temperature of 700 °C is __________ $\mu m$ (rounded off to one decimal place).
Which of the following is a core vector GIS operation?
Which of the following is NOT a derivative of digital elevation model (DEM)?
Identify the type of digitizing error in the following figure.
How many NAVSTAR GPS satellites in standard constellation are operational and provide uninterrupted service?
Dilution of Precision (DOP) in GPS based survey is primarily used to assess the quality of
Which of the following is NOT a segment of GPS to determine position and time?
Which of the following mathematical principles is applied for finding a geographic position on Earth's surface using GPS?
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.
The Chi-square distribution is used for comparing the
Which of the following options describes the CORRECT relationship for a Gaussian distributed random error?
A distance was measured as 200 m ± 0.1 m. The relative precision of this measurement is
Which of the following options best describes the "uncertainty" in a measurement?
The value of the convolution of $f(x) = 3 \cos 2x$ and $g(x) = \frac{1}{3} \sin 2x$ where $x \in [0, 2\pi]$, at $x = \frac{\pi}{3}$ is ............................. (Rounded off to 2 decimal places).