esa standard code ranging and pn ranging) rely on the transmission of a ranging signal that can be coupled only with a residual carrier (with low data rate) telemetry signal or in the case of pn ranging with a suppressed carrier
using gmsk modulation with bitrate limited by the pn ranging chiprate.
Mitchell, "Performance analysis of multi-wavelength RoF system applying double sideband suppressed carrier
DSB-SC modulation", Electronic letters, 1995.
The envelope signals of the two- and four-tones, which have the same amplitudes and identical tone-spacings of 2[w.sub.1], with suppressed carrier
modulation, are given as