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Holographic enhanced remote sensing system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rothenheber, Edward H. Huff, Lloyd Gaynor, Edwin S. Rhodes, William T. Iavecchia, Helene P. |
| Copyright Year | 1990 |
| Description | The Holographic Enhanced Remote Sensing System (HERSS) consists of three primary subsystems: (1) an Image Acquisition System (IAS); (2) a Digital Image Processing System (DIPS); and (3) a Holographic Generation System (HGS) which multiply exposes a thermoplastic recording medium with sequential 2-D depth slices that are displayed on a Spatial Light Modulator (SLM). Full-parallax holograms were successfully generated by superimposing SLM images onto the thermoplastic and photopolymer. An improved HGS configuration utilizes the phase conjugate recording configuration, the 3-SLM-stacking technique, and the photopolymer. The holographic volume size is currently limited to the physical size of the SLM. A larger-format SLM is necessary to meet the desired 6 inch holographic volume. A photopolymer with an increased photospeed is required to ultimately meet a display update rate of less than 30 seconds. It is projected that the latter two technology developments will occur in the near future. While the IAS and DIPS subsystems were unable to meet NASA goals, an alternative technology is now available to perform the IAS/DIPS functions. Specifically, a laser range scanner can be utilized to build the HGS numerical database of the objects at the remote work site. |
| File Size | 8087428 |
| Page Count | 272 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930009041 |
| Archival Resource Key | ark:/13960/t5n925672 |
| Language | English |
| Publisher Date | 1990-08-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Teleoperators Digital Systems Image Processing Display Devices Holography Imaging Techniques Video Data Remote Sensing Real Time Operation Ccd Cameras Light Modulation Thermoplasticity Light Modulators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
