Page 88 - Fundamentals of Radar Signal Processing

1 8 8
c = 2.99792458 × 10 m/s in a vacuum. A value of c = 3 × 10 m/s is normally used except where very
high accuracy is required.
2
Systems exhibiting good or poor resolution are commonly referred to as high- or low-resolution systems,
respectively. Since better resolution means a smaller numerical value, in this text the terms “fine” and
“coarse” are used instead.
3
Gordon Moore’s famous 1965 prediction was that the number of transistors on an integrated circuit would
double every 18 to 24 months. This prediction has held remarkably true for nearly 40 years, enabling the
computing and networking revolutions that began in earnest in the 1980s.
4 This is analogous to the use of the two-argument atan2() function instead of the single-argument atan()

function in many programming languages such as FORTRAN or C.
5
Although these formalizations are not needed for the discussions in this text and are therefore avoided for
simplicity, it is worthwhile to note that the complex signal in Eq. (1.21) is the analytic signal associated with
the real-valued signal of Eq. (1.17). The imaginary part of Eq. (1.21) is the Hilbert transform of the real
part.
6
The effects of unequal signal strength and noise on resolution are considered in (Mir and Wilkinson, 2008).