Page 312 - Fundamentals of Radar Signal Processing

FIGURE 4.52 Contour plot of 16-bit Frank code ambiguity function.

The P3 and P4 codes of length N are given, respectively, by

(4.139)

Unlike the Frank code, these codes can be generated for any length N. Figure
4.53 shows the matched filter output for the N = 20 P3 code, while Fig. 4.54

shows the corresponding ambiguity function. Again, range-Doppler coupling is
evident.