Costas Loop Demodulation of Suppressed Carrier BPSK Signals in the DSN Environment-Experimental Results Obtained at TDL

Suppressed carrier bit!aty phase-shift keyed (ilPSK) sijwalliw is cwrcnt!v bcitf.c cottsidcrcd as o dcs(sl ahcrt)atiw fbr furwc DSN tclcmcfry itl rite nulltittw.cabit nwc. Carrier rracking of sttclt st@ra/sis wtally achicrcti by a Cosras ioop, as opp( Mc,i r[> the oriiinary phase lock ktoi~. A Costus loop cai)ablc of cictttodttiathtg BPSA’St@OIS ~$’itlt Liata rates up to I Msps itas bcctt designed ami consttucrcd ami irs Diwplcr rrackiw i)cr~orma) we with rcsi)cc: to a Bit Yck Ill rcccirer has been !cstctl ar III c Tcic. ct~tttt~lrtltit”ori(~!tsDcvclopntcnt l.aboratoty ( TDi.). The pwiwsc of these c.vpcrimcnrs is t<> itl rcsri.qarc the cotni>atibility of sttppresscd carrier sigtlalling wirh tire cwrcttt racii<~ttk’!ric s.vsrcm: spccifica[(v DOppicr trackiltg and ratt.cittg. 77tis article liocwnctlts rhc c.vpcrimctttal results obtained to-date witit respect to Dopi)ler tracking.