Radar measurements of Martian topography.
Martian topography during rotation observed using radar round trip echo delay at 7840 MHz, discussing dark areas relation to elevation
Counselman, C. C.↗
Engineering topics
Pettengill, G. H.
Publications and source records attributed to Pettengill, G. H..
Discrepancies between radar data and the lunar ephemeris.
Eckert-Brown lunar ephemeris predictions discrepancies with radar data of radial velocities
Pettengill, G. H.↗
A radar study of the lunar crater Tycho at 3.8-cm and 70-cm wavelengths.
Radar echoes intensity distribution maps from lunar surface surrounding crater Tycho
Pettengill, G. H.↗