1. A method for removing one or both of images and spurs from an intended radio frequency (RF) signal being measured, the method comprising: in a measurement system, automatically determining a threshold (TH) value; taking a first measurement of an input RF signal received at an input port of the measurement system while sweeping a local oscillator (LO) of the measurement system through a first predetermined frequency range subdivided into N frequency increments to obtain a reference trace comprising N reference trace elements, respectively, where N is a positive integer that is greater than or equal to one; taking M additional measurements of the input RF signal while sweeping the LO of the measurement system through M predetermined frequency ranges, respectively, to obtain M alternate traces, respectively, where M is a positive integer that is greater than or equal to one, each of the M predetermined frequency ranges being subdivided into N frequency increments, each of the M alternate traces comprising N alternate trace elements; of the M alternate traces, determining a minimum alternate trace, the minimum alternate trace comprising N minimum alternate trace elements; for each of the N minimum alternate trace elements, calculating N qualifier trace elements by taking an absolute value of a decibel difference between the N reference trace elements and the N minimum alternate trace elements, respectively, the N qualifier trace elements comprising a qualifier trace; comparing each qualifier trace element to the TH value, and when the qualifier trace element is greater than or equal to the TH value, using a minimum of the respective reference trace element and the respective minimum alternate trace element as a respective final trace element of a final trace comprising N final trace elements, and when the qualifier trace element is less than the TH value, using the respective reference trace element as the respective final trace element in the final trace; and displaying the final trace.