[FURIOUS] ALP is only jamming when signal is detected

[Yellowcab]

I believe once they detect LIDAR, jammers will send a few pulses by keeping the timing of the last few pulses received and sending out the some pulses "blindly". But then they stop to sample the incoming pulses again (it's very hard to transmit and receive signals at the same time, and in fact, if the transmitted pulse comes at the exact same time as the received pulse, the transmitter would likely overwhelm the receiver and you wouldn't be able to tell the difference between your own pulse and a pulse from the LIDAR gun). So it can be worse than sending nothing, because you could miss some incoming pulses and fail to jam the gun at all.

But remember that:
1. The timing of the returned pulses must be accurate to within nanoseconds in order to jam the gun
2. Sending "a few" pulses (say, 10-20) to a gun that's operating at, say, 200pps, would take only 0.05 to 0.1 seconds. It's extremely hard for humans looking at a flashing LED to perceive this. Sending out more pulses beyond that is likely to be useless without resetting the time reference by receiving more pulses. Remember, the inter-pulse spacing is a few milliseconds and the returned pulses must be accurate to within nanoseconds.

Mostly wrong. But as they say at kid's sporting events, "Good try."