EECS20N: Signals and Systems

Physical Attributes

Change over time of physical attributes can be represented as a time function. Examples:
  • The trajectory of an airplane is represented as

    Position: Time Reals 3

    where Position (t) = (x(t), y(t), z(t)) is its position at time t Time. Its position and velocity are represent by the function

    f: Time Reals 6

    where f(t) = (x(t), y(t), z(t), vx(t), vy(t), vz(t)).

  • A weather map is a function

    AirTemp: X × Y Temperature

    where X × Y ' Reals2 is the area of interest and AirTemp(x, y) is the temperature at location (x, y).