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“This tracker not use any gps system. This tracker use a diversity video receiver and a arduino pro mini, through the analog inputs arduino read the RSSI sinal percentage from receivers. Sinal its compared and servo follow the stronger RSSI …
Content for RSSI
In telecommunications, received signal strength indicator (RSSI) is a measurement of the power present in a received radio signal. RSSI is usually invisible to a user of a receiving device. However, because signal strength can vary greatly and affect functionality in wireless networking, IEEE 802.11 devices often make the measurement available to users. RSSI is often derived in the intermediate frequency (IF) stage before the IF amplifier. In zero-IF systems, it is derived in the baseband signal chain, before the baseband amplifier. RSSI output is often a DC analog level. It can also be sampled by an internal analog-to-digital converter (ADC) and the resulting codes available directly or via peripheral or internal processor bus.