Q. Which of the following can be used to estimate the latitude in the northern hemisphere using the horizon as a reference?

View solution

Q. What is it called when the position is determined by angles between a star and an accurate time reference?

View solution

Q. Why is the inertial navigation system combined with celestial navigation system?

View solution

Q. The sensors that maintain a centered star image for celestial navigation is called as _________

View solution

Q. Which of the following is required to integrate stellar navigation and inertial navigation to get the best estimate navigation solution?

View solution

Q. The observability problems are greatly intensified if the telescope is rigidly mounted to the IMU.

View solution

Q. The inertial LOS to any star is precisely given from _______

View solution

Q. The angular error is the angular difference between computed LOS and the physical star sensor LOS.

View solution

Q. Which of the following uses lens and mirrors for focusing?

View solution

Q. What is the physical diameter of the first optical element in the telescope?

View solution

Q. What is the image of the star at the focal plane called as?

View solution

Q. The physical size of the star depends upon __________

View solution

Q. The ratio of the focal length to aperture is called the __________

View solution

Q. Star signal power is directly proportional to an effective area of a telescope.

View solution

Q. Anti reflection coated optics reduce __________

View solution

Q. The star signal power does not depend on _____________

View solution

Q. The sky background power does not depend on _______

View solution

Q. The effect of night sky background effect is negligible with respect to star power.

View solution

Q. The ratio of the photons converted to signal generating electrons to the total number of photons arriving is called as?

View solution

Q. The photovoltaic or photoconductive detectors are packaged as ___________

View solution