1090MHz ADS-B messages are a subset of Mode-S messages, specifically falling under Mode-S downlink transmissions. Mode-S messages encompass all transmissions from Mode-S transponders, among which 1090MHz ADS-B
The satellite uses a transparent transponder to transmit it to another ground station. After the signal from the satellite is received, the receiver and demodulation recover the 1 PPS signal from the received signal. The recovered 1 PPS signal enters the TIC as a pulse to trigger the gate ...