What term describes the signal used by the AN/TPS-75 Aircraft Control and Warning System, equivalent to the transmit frequency minus 32 megahertz (MHz)?

The term that describes the signal used by the AN/TPS-75 Aircraft Control and Warning System, equivalent to the transmit frequency minus 32 megahertz (MHz), is referred to as the Stable Local Oscillator (STALO) frequency. The STALO frequency serves as a critical component in radar systems, providing a stable reference signal that helps in mixing with the received signals to produce intermediate frequency signals for processing.

In radar technology, having a stable frequency reference is essential for accurately detecting and tracking aircraft. The specific configuration of transmitting at a certain frequency and then using a stable oscillator at a frequency offset (in this case, 32 MHz lower) allows the radar system to function effectively by ensuring that the received echoes can be processed without interference and with high fidelity. This frequency choice balances the radar's operational range and signal clarity, which is crucial for tasks such as air traffic control and military surveillance.

Therefore, the choice of the Stable Local Oscillator frequency accurately captures the function of this signal in the context of the AN/TPS-75 system.