Term
| Given the orbital parameters of a satellite, the Doppler shift of the signal transmitted from that satellite, and the velocity of the vessel, it is possible to obtain a navigational fix if the satellite is within what distance from the navigation set? |
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Definition
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Term
| If errors are detected during a read back of freshly injected satellite data, how often is the NNSS satellite message injection repeated until the transmission is verified as being correct? |
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Definition
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Term
| What is the "at sea" accuracy of the AN/SRN-19(V)2? |
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Definition
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Term
| How often is the identification code broadcast? |
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Definition
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Term
| Which of the following terms describes GPS satellite positioning data? |
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Definition
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Term
| How many earth orbits will each GPS satellite complete in a 24 hour period? |
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Definition
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Term
| What is the designation of latest TACAN equipment in the fleet? |
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Definition
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Term
| What communications method is used for GPS satellite broadcasts? |
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Definition
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Term
| What signal does the TACAN ground station transmit to identify itself? |
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Definition
| Identification pulse group |
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Term
| Which of the following actions required to determine position in piloting is/are not required in electronic navigation? |
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Definition
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Term
| Which navigation system continually computes the latitude and longitude of a ship by sensing acceleration? |
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Definition
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Term
| How often is the GPS satellite navigation data updated? |
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Definition
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Term
| In the AS-3240 electronically-scanned antenna, the old single phase rotating parasitic element has been replaced by how many electrically-switched inner parasitic elements? |
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Definition
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Term
| Accurate NNSS position fixes for a moving vessel require what additional computation? |
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Definition
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Term
| The TACAN receiver frequency is always displaced how many MHz from the transmitter frequency? |
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Definition
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Term
| The nominal orbit of NNSS satellites is what type of orbital parameter? |
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Definition
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Term
| Radio navigation consists of which of the following categories? |
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Definition
| Space-based systems and terrestrial systems |
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Term
| Ionospheric delay is greatest when a signal is received from directly overhead. True or False? |
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Definition
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Term
| You are initializing the AN/SRN-19(V)2. In addition to programming the set's position, what other parameter must you enter? |
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Definition
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Term
| GPS satellites use atomic clocks; the receivers do not. What type of error must be computed based on this fact? |
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Definition
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Term
| Which ships system will provide the information required to perform the additional computation required by NNSS? |
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Definition
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Term
| Approximately how long does it take the injection station to transmit information to a NNSS satellite? |
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Definition
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Term
| What type of modulation is used to convey TACAN bearing information? |
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Definition
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Term
| What is the total number of TACAN channels available when using both X and Y modes? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| One of the capabilities of the AN/WRN-5 includes time-ordered alerts for up to how many satellites? |
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Definition
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Term
| There are how many active spare and how many active operational GPS satellites? |
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Definition
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Term
| TACAN is based on what type of radio air navigation system? |
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Definition
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Term
| One of the characteristics of dead-reckoning is that the accuracy of the estimated position never exceeds the navigation method used to obtain the last fix. What happens to the accuracy of the estimated position over time? |
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Definition
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Term
| OMEGA is a hyperbolic phase-difference measuring system that compares the phase angle of two or more radio signals synchronized to what device or factor? |
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Definition
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Term
| How many aircraft can be provided distance data simultaneously? |
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Definition
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Term
| What characteristic of the transmitted TACAN pulses supplies the distance information to the aircraft? |
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Definition
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Term
| What type of system is used to keep the SINS platform stabalized? |
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Definition
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Term
| What type of radiation pattern is transmitted by the TACAN ground station antenna? |
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Definition
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Term
| NNSS satellite data can be used as an accurate time reference. True or False? |
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Definition
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Term
| What activity may degrade the accuracy of the AN/SRN-19(V)2? |
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Definition
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Term
| A ship's internal navigation system is dependent on celestial, sight, and radio navigation aids. True or False? |
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Definition
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Term
| Approximately how often can operators using the NNSS obtain fixes? |
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Definition
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Term
| NNSS satellite refined orbits are calculated at what facility? |
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Definition
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Term
| What are the 2 types of NNSS satellite parameters included in the phase-modulated data? |
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Definition
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Term
| Which of the following receiver controls provides noise generated outputs? |
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Definition
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Term
| Which device measures change in speed or direction along the axis in which it lies? |
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Definition
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Term
| What navigational system will replace the NNSS? |
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Definition
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Term
| Referring to land marks with known positions on earth describes what navigation method? |
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Definition
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Term
| Within how many feet can GPS determine position fixes? |
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Definition
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Term
| Troposperic delay is predicted and included in what satellite data? |
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Definition
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Term
| What type of decoders do TACAN transponders use? |
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Definition
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Term
| What is the normal operating mode for AN/WRN-6(V)? |
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Definition
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Term
| GPS navigation is based on what principle? |
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Definition
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Term
| Estimating ship's position between known navigational points or fixes is know as? |
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Definition
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Term
| Instead of depending on radio wave reflection, beacon transponders generate what type of reply? |
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Definition
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Term
| NNSS satellites transmit phase modulated data ever 2 minutes on how many rf carriers? |
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Definition
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Term
| Of Precise Code and Course Acquisition Code, which is not available to civilians? |
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Definition
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Term
| GPS satellites are positioned so a minimum of how many satellites are observable to a user on earth? |
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Definition
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Term
| According to the 1992 Federal Radio Navigation Plan, what system will become the primary navigation reference system for surface ships? |
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Definition
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Term
| Tactical navigation is directly concerned with maneuvering the ship in navigable waters. True or False? |
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Definition
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Term
| What facility transmits the data required to update the GPS satellite navigation data message? |
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Definition
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Term
| Satellite signals reflecting off one or more objects before reaching the navigation set produce what type of reception? |
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Definition
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Term
| What data do operators enter into the AN/WRN-6(V) to speed up the satellite acquisition? |
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Definition
| Time and date and current postion |
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Term
| What data is not included in the GPS NAV-msg? |
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Definition
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Term
| The AN/URN-20 uses the same electronically scanned antenna as the AN/URN-25. True or False? |
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Definition
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Term
| How is the time difference between satellite transmission and when the navigation set receives this signal related to the distance between the satellite and the receiver? |
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Definition
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Term
| Which of the following factors affects the measurement of doppler shift? |
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Definition
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Term
| What is the most common name for the 135Hz reference burst? |
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Definition
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Term
| LORAN takes advantage of what radio signal characteristic? |
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Definition
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Term
| What facility calculates NNSS satellite clock error before satellite message injection? |
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Definition
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Term
| What is one big advantage the electronically-scanned antenna has over the old mechanically rotated antenna? |
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Definition
| It eliminates bandwidth limitations |
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Term
| To solve the problem of Doppler shift accuracy, satellites are designed to transmit on how many frequencies? |
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Definition
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Term
| If more interrogating aircraft come into the TACANs range, the number of noise generated pulses will? |
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Definition
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