Understanding the operating principles governing V1's J feature might better enable us to understand why it J's out real threats so frequently, and consequentially help us to recognize instances in which V1 J's out a threat when it shouldn't.
Does anyone know what the operating principles are? That is, what set of occurrences causes V1 to J out a Ka alert?
I thought of the following possibility. Let me know how plausible you think it is: V1 alerts in response to a signal on the Ka band quickly (so that it doesn't miss a quick Ka POP burst), before it has time to sweep for a local oscillator fundamental frequency (11 or so GHz) or second harmonic (23 or so GHz) which corresponds to the signal on the Ka band (35 or so GHz). After it has swept for and found such a fundamental or second harmonic, V1 realizes that what it originally thought was a Ka alert was merely the third harmonic (at 35 or so GHz) of this corresponding fundamental (at 11 or so GHz) and that, as such, what it previously thought was a legitimate threat turned out not to be. Thus, it retracts its original alert with the 'J'.
If this were true, we could see how V1 would J out real Ka threats. If another detector, say, were in close proximity to V1 when a genuine Ka threat was in the area, V1 could mistake the local oscillator fundamental or second harmonic being emitted from this detector as one which corresponds to the real Ka alert. As such, V1 would think that the real Ka alert was merely the third harmonic of this detector's local oscillator fundamental or second harmonic and, consequentially, J out the alert.
Is there any merit to this theory?