Case 3: Input Receiver Samples

This is the traditional Zdr radar with a high-power, fast switch that alternates between horizontal and vertical on each pulse. The switch is made just prior to the transmit pulse, so that the transmitter radiates, and then receives at a single polarization for each pulse.

The samples are as follows:

[ S h h 1 ] [ S v v 2 ] [ S h h 3 ] [ S v v M + 1 ]

For this discussion, we assume that there are M+1 total samples with M/2 horizontal pulses indexed by (1, 2, 3 ... M-1) and M/2+1 vertical pulses indexed at (2, 4, 6 ... M).

The processor does not assume that the first pulse in a sequence is horizontal.