Mrsi

Because the available signal is used to encode spatial and spectral information, MRSI requires high SNR achievable only at higher field strengths (3 T and above).

Combined with TOT or MRSI tactics that give no warning of the incoming rounds, these rounds are especially devastating because many enemy soldiers are likely to be caught in the open.

It is possible for artillery to fire several shells per gun at a target and have all of them arrive simultaneously, which is called MRSI (Multiple Rounds Simultaneous Impact).

The number of rounds that can be delivered in MRSI depends primarily on the range to the target and the rate of fire, for maximum rounds the range is limited to that of lowest propelling charge that will reach the target.

The United States Crusader program (now cancelled) was slated to have MRSI capability.