IEEE

Receive Beamforming Using Sum and Difference Virtual Co-arrays for Dual-Function Radar Communications

Abstract: The dual-function radar and communication (DFRC) system addresses the problem of radio frequency congestion. Sparse arrays can reduce system cost and increase array aperture by constructing ...
INSIDENOVA.COM

Fairfax County converting Lorton landfill into 37-acre solar array

Fairfax County is converting 37 acres of the Interstate 95 landfill in Lorton into the county’s largest solar array. “The ground we’re standing on now is the closed landfill part of our site — it ...
GitHub

Presto MapSubset Function, Not consistent on "ARRAY comparison not supported for arrays with null elements"

SELECT map_subset(c0, c1) FROM ( VALUES ( MAP(ARRAY[ARRAY[1, 2]], ARRAY[1]), ARRAY[ARRAY[1, NULL], ARRAY[2, NULL]] ) ) t(c0, c1); returns "ARRAY comparison not ...
SETI

Scientists Use Allen Telescope Array to Search for Radio Signals in the TRAPPIST-1 Star System

October 16, 2024, Mountain View, CA — Scientists at the SETI Institute and partners from Penn State University used the Allen Telescope Array (ATA) to search for signs of alien technology in the ...
GitHub

ValueError: Expected 2D array, got 1D array instead:

First I generate descriptors using asap gen_desc -f train.xyz soap Then I tried to plot PCA map using asap map -f ASAP-desc.xyz -dm '[SOAP*]' -c energy pca. But it raise an error: ValueError: Expected ...