Tracking of Noncooperative Airborne Targets Using ADS-B Signal and Radar Sensing

Table 2

Link budget analysis.

Receiver noise floor = −110.9 dBm		Received signal power = −105.9 dBm
Noise figure	3 dB	Peak transmit power	+57 dBm
Bandwidth	1 MHz baseband	Processing gain; (545 samples coherently integrated)	27.4 dB
		Antenna gain; (omnidirectional)	0 dB
		Assumed RCS	0 dBsm
		1/(4π)^3	−33.0 dB
		1/(Range)^4 (at 4.5 km)	−146.1 dBm^−4
		Square of wavelength	−11.2 dBsm
	Signal-to-noise ratio, SNR = 5.0 dB