Money has become available to build a 7 pixel FPA for the GBT, expandable to 61 pixels. Our GBT Spectrometer is an 800 MHz, 8 sampler, 2048 channels/IF system. Not nearly enough to exploit the full potential for an array.
Initial System Specifications
16 IF's (7 pixels, dual polarizations, plus a spare pair for non-array use)
Sampling bandwidth Minimum of 3.6 Gs/s, 4 GS/s preferred)
4-8 bit sampling
1.8 GHz of bandwidth, 32K channels/IF
4 Subbands to look at multiple narrow lines in each IF
Generate and accept up to three switching signals, plus a hardware blanking signal.
Accumulation for 10 ms to 10 seconds.
Needed in 1-2 years.
Useable as general purpose spectrometer for other receivers, with proper samplers/data transmission system