Practice Test GeeksFS - Fundamentals of Surveying Exam Practice Test
← All FS Flashcard Decks

FS - Fundamentals of Surveying GPS and GNSS Technology Flashcards

6 cards from real FS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 FS - Fundamentals of Surveying GPS and GNSS Technology flashcards as text

  1. What is RTK in GPS surveying?

    Answer: Real-Time Kinematics

    RTK (Real-Time Kinematics) is a differential GPS technique that delivers centimeter-level accuracy in real time by transmitting corrections from a base station to a rover.

  2. What is multipath error in GPS surveying?

    Answer: Signal reflecting off surfaces before reaching the antenna

    Multipath error occurs when GPS signals reflect off nearby surfaces such as buildings or water, causing the receiver to process erroneous signal paths.

  3. Which atmospheric layer causes the largest GPS signal delay?

    Answer: Ionosphere

    The ionosphere causes the largest GPS signal delay because free electrons slow the electromagnetic signal as it passes through.

  4. What does PDOP measure in GPS quality assessment?

    Answer: Position Dilution of Precision

    PDOP (Position Dilution of Precision) describes the combined effect of satellite geometry on 3D positional accuracy.

  5. GPS satellites orbit Earth at approximately what altitude?

    Answer: 20,200 km

    GPS satellites orbit at approximately 20,200 km above Earth's surface in medium Earth orbit, providing global coverage.

  6. What GNSS constellation is operated by Russia?

    Answer: GLONASS

    GLONASS is Russia's Global Navigation Satellite System constellation, which modern multi-constellation receivers can use alongside GPS.