Design of Short Synchronization Codes for Use in Future GNSS System

Table 3

Secondary synchronization code—performance measures (𝜇(𝑥), PSLR, and ISLR are defined in (5), (3), and (4), resp.).

Secondary code performance
Standard codes					Proposed codes
Code identifier	Code length	|𝜇(𝑥)|	PSLR (dB)	ISLR (dB)	Code identifier	Code length	|𝜇(𝑥)|	PSLR (dB)	ISLR (dB)
CS4	4	0.5	∞	∞	S4	4	0.5	∞	∞
NH10	10	0.2	14	1.5	S10	10	0	14	1.5
NH20	20	0.2	14	4	S201	20	0	14	4
CS20	20	0.2	14	4	S202	20	0.1	14	4.9
CS25	25	0.2	18.4	6.3	S203	20	0.2	14	4
M4	4	0.5	∞	∞	S251	25	0.2	18.4	6.3
M10	10	0.4	14	1.5	S252	25	0.2	18.4	6.3
M20	20	0.1	14	4.9
M25	25	0.2	18.4	6.3