NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Lunar Sounder Data Plots of Amplitude vs Time of Position of Spacecraft on Comp PA

NSSDCA ID: PSPG-00660

Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1972-12-11 to 1972-12-16

Description

This data set consists of 70-mm filmed plots of HF-2 data at a frequency of 15 MHz processed using the Environmental Research Institute of Michigan Precision Optical Processor Facility. The HF-2 system was designed for partial overlap with the HF-1 system, trading off depth of exploration for improved resolution. Chirped pulses were transmitted at a rate of 400 pulses per sec. The HF-2 image was processed with an azimuth demagnification of 69.85. The frequency-plane aperture was set so that slant range and azimuth resolution were 100 m. Range weighting was used to reduce range sidelobes, degrading range resolution by a factor of approximately 2.2 times. The film scale parameters are 7.16 x 10 to the minus 2 mm per sec along the film and 4.04 x 10 to the 4 mm per sec across the film. Locations can be determined by measuring from the breaks in the data when the sounder was turned on and off. See table 1 in data set 72-096A-04D. A holographic viewer is required to interpret the data on these plots. Due to instrument variations, different viewers could give results which don't agree with each other.

Alternate Names

  • Lunar Sounder Data Plots HF2

Discipline

  • Planetary Science: Geology and Geophysics

Old NSSDCA ID

  • 72-096A-04B

Additional Information

Spacecraft

Experiments

Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office

 

Personnel

NameRoleOriginal AffiliationE-mail
Mr. G. F. AdamsData ProviderUniversity of Michigan
Mr. G. F. AdamsGeneral ContactUniversity of Michigan
Dr. Roger J. PhillipsGeneral ContactNASA Jet Propulsion Laboratoryroger@boulder.swri.edu
[USA.gov] NASA Logo - nasa.gov