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GPS Question & Answers

July 7, 2021 By WatElectronics

This article lists 100 GPS MCQs for engineering students. All the GPS Questions & Answers given below include a solution and link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on GPS topic which is core in Electronics & Communication Engineering.

In 1970, a navigation system based on satellites was developed by the U.S DoD (Department of Defense) was known as the Global Positioning System. This system is initially developed for the fulfillment of the military needs of the U.S armed forces. Later on, it was made accessible for both civilian and military users.

The purpose of GPS is to provide information about time as well as the position of the object and this is a continuous phenomenon. Nowadays unlimited users are accessing this system. It is passive by nature. Obstacles such as mountains and trees block the weak GPS signals so that the accuracy and the performance get affected. GPS can be accessed for free.

The advantages of GPS include route planning being smarter, safety from theft avoids unauthorized vehicle use, administrative burden can be reduced, customer service is good, productivity can be increased, etc.

The disadvantages of GPS are; Inaccuracy, the distraction of driving, battery or signal failure, issues of privacy, etc. The applications of GPS include; determining location, tracking, navigation, timing, mapping, etc

 

1). GNSS systems are _______________.

Hint
2). During which year the project on GPS was launched?

Hint
3). Who are the members involved in the success of GPS invention?

Hint
4). A test on General Relativity was proposed by ____________.

Hint
5). Global Positioning System (GPS) is operated by _______?

Hint
6). A receiver at GPS calculates the self time and position basing on the received data from the different ___________.

Hint
7). ___________ is present on the satellites of GPS to contribute the accurate time information.

Hint
8). How many minimum satellites are operational in the constellation of GPS?

Hint
9). The degradation in the quality of GPS by the government of the U.S. discontinued by whom?

Hint
10). Which country developed GLONASS in contemporary with the GPS?

Hint
11). Galileo system for Navigation is operated by ________.

Hint
12). Compass satellite system of navigation is operated under __________ government.

Hint
13). The GPS operated by Indians is ____________.

Hint
14). Once the Selective Availability got lifted the accuracy of GPS was for __________ meters.

Hint
15). The mathematical principle involved in GPS is _________?

Hint
16). The services offered by GPS ________?

Hint
17). The satellites placed in the constellation of GPS arranged into _______ orbital are surrounded to Earth?

Hint
18). The term ‘Epoch’ in GPS is a coded sequence of _________.

Hint
19). The two satellites and its extensions connecting line forming the axis of _______.

Hint
20). Based on ___________ a receiver of GPS indicates how far the satellite located is.

Hint
21). The satellites meant for GPS orbits in _______________.

Hint
22). How many satellites on the surface of Earth are used so that the location can be produced?

Hint
23). A device altitude can be measured using __________ satellite.

Hint
24). How many satellites are required to measure 2-D position i.e., the longitude and the latitude?

Hint
25). The components partitioned in GPS are known as ______.

Hint

GPS Interview Questions & Answers

26). The current GPS consists of ______ major segments.

Hint
27). The segments present in GPS are __________.

Hint
28). The US Space Forces maintains, develops and operates _______ segments.

Hint
29). The space segment consists of _________ number of satellites.

Hint
30). How many ground antennas are present in the control segment?

Hint
31). _____________ tracks the satellites as they are passed over.

Hint
32). The observations collected by the monitor stations are fed to ________.

Hint
33). Global monitoring station is used in _____________.

Hint
34). An alternate Master Control station is present in ________.

Hint
35). How many AFSCN’s are present in the ground antennas category?

Hint
36). AFSCN stands for _______.

Hint
37).Telemetry is collected by ________.

Hint
38). How many types of observable are present in GPS?

Hint
39). How many methods used by the surveyors in the measurement of GPS?

Hint
40). ______________ method is used in finding the exact coordinates for the surveying points.

Hint
41). Static GPS Baseline technique makes use of ________ receivers of GPS.

Hint
42). The distance between base station and the second receiver is calculated by using ________ technique.

Hint
43). ___________ technique uses the multiple numbers of points during the period of measurement and used as the surveyed data.

Hint
44). RTK observations technique limited to ____________ (Kms) range.

Hint
45). For the smaller areas ________ technique is used in gathering the surveying data quickly.

Hint
46). CORS stands for ______________.

Hint
47). ________ technique offers installation of a base station in the location known and that is permanent.

Hint
48). The Engineering projects which require surveying continuously over a longer duration prefer which technique?

Hint
49). The benefits of using GPS in surveying are ___________.

Hint
50). In _____________ the constellation of GPS expanded from 24-slots to 27.

Hint

GPS Question & Answers

51). A group formed with four of the satellites is known as __________.

Hint
52). The orbital period for every satellite is on average about ___________ hours.

Hint
53). The codes used in GPS are ________.

Hint
54). The satellite transmitting signals are modulated with _____________ bit sequences.

Hint
55). The L1 signal modulated by _________ Mbps Pseudorandom sequence.

Hint
56). The L2 signal modulated by ___________Mbps sequence of pseudorandom.

Hint
57). Which GPS code is utilized by public?

Hint
58). Which code is preferred in Military applications?

Hint
59). The services offered by GPS are _________.

Hint
60). Which receivers keep track of both the GPS codes?

Hint
61). Which receivers track only Coarse Acquisition codes?

Hint
62). Satellites are provided with a unique sequence of binary code known as _________.

Hint
63). Which antennas are used in the receivers of GPS?

Hint
64). ____________ antennas are known for amplifying the signals before transmitting it to GPS receiver.

Hint
65). Less power is utilized by GPS because of _______ antennas.

Hint
66). A message of navigation broadcasted on L1and the L2 frequencies at ___________ bit rate.

Hint
67). The basic message format consists of ________ bits.

Hint
68). Each frame consists of ______ sub frames.

Hint
69). Week number and the timings are encoded in _____ sub frame.

Hint
70). What does second & third sub frame consists of?

Hint
71). What information do the fourth and the fifth sub frames hold?

Hint
72). The time taken by the Almanac to update is _________.

Hint
73). GPS is accurate within ___________ meters.

Hint
74). DOP stands for __________.

Hint
75). If the satellites used in tracking are evenly spread then the accuracy of position gets _________.

Hint

GPS Quiz Questions

76). If the strength of the signal is high the reception of signal status is __________.

Hint
77). Location caching done in detection of GPS increases ________ of the system.

Hint
78). _________ is the lock of GPS in which previous info used to calculate the newer position.

Hint
79). Which is the quickest lock of GPS?

Hint
80). Which lock doesn’t keep the satellites viewing information?

Hint
81). The lock in which all the information dumped is______.

Hint
82). Which is the longest lock?

Hint
83). The principle of Doppler shift used in GPS to measure ________.

Hint
84). What are the sources of errors in GPS?

Hint
85). What is GPS-ICD-200?

Hint
86). ICD is an acronym for _______.

Hint
87). ____________ category GPS receivers are used in the vehicles to achieve address to address information of navigation to the drivers.

Hint
88). _______________ category receivers offer the users accuracy in position.

Hint
89). __________ type receiver requires ‘Post Processing Software’.

Hint
90). __________ tells the receiver at what time the satellite should be at what place?

Hint
91). The accuracy of DGPS is ____cm.

Hint
92). DGPS stands for _________.

Hint
93). Modified version of GPS used to approach precision in the military applications is known as ____________.

Hint
94). In the year 2021 by January 9th how many satellites were operational?

Hint
95). In mapmaking the presence of GPS is to verify _________.

Hint
96). Which country has the accurate GPS in comparison to all the regional GPS launched?

Hint
97). The handset with the integration of GPS was launched in _________.

Hint
98). Cell phones with the receivers of GPS will communicate with ______________ GPS satellites.

Hint
99). LPS stands for__________.

Hint
100). In LPS to determine the location, signals are collected from __________.

Hint

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