A Dual-Hierarchy Synchronization Method for Signal Preambles with High Detection Rates for Satellite-Based ADS-B Receivers with Different Sensitivities

Table 4

Adaptive intervals in a simulation environment.

SNR (dB)	-2	-1	0	1	2	3	4
Detection rate (%)	96.02	96.07	96	96.69	96.98	98.1	99.6
	120	82	60	35	10	1	1
Length of the adaptive interval	241	165	121	71	21	3	3

The detection rate is obtained by counting the detection results of 10,000 signals at a certain SNR; the of the interval and the length of the adaptive interval are the conclusions obtained in step 3.