Chapter 4 - About GPS Receivers
Understand the Technical Terms and Features of GPS Receivers
Topics described:
    Antennas
        External Antennas
        What is a Good Antenna?
    Accuracy
        Selective Availability
        Ionospheric Interference
        Satellite Geometry
        Multipath Signals
        Altitude Accuracy
        Accuracy in the 2D Mode
        Position Averaging
        Differential GPS (DGPS)
    Map Datum
    Built-in Maps
    Coordinate Grids
        Universal Transverse Mercator (UTM)
        Latitude/Longitude
        Military Grid Reference System (MGRS)
    Computer Interface
    Channels
    Weight
    Waypoints or Landmarks
        Waypoint or Landmark Manipulation
        Single Waypoint
        Alphabetized List
        Nearest Waypoint
        Proximity List
    Goto Function
    Routes
    Compass
    North Settings
    Data Formats
    Navigational Statistics
    Navigation Screens
    Power Sources
    Mounting
    Calculations
        Solar and Lunar Calculations
        Coordinate by Reference or Projection
        Point-to-Point Calculations
    Area Calculations
    Time
    Data Entry