Editorials

Ozone Profiling Lidar System Customer Case The customer is designing an ozone-profiling lidar system for measuring the concentration of ozone from ground level up to about 4 kilometer (km) altitude. The system operates in the ultraviolet range and uses multiple receiver telescopes to cover the range. The dynamic range of the signal is enormous, so small aperture telescopes are used to collect backscattered light from low altitudes and large ones are used to collect backscattered light from high altitudes. The customer is operating simultaneously at three laser wavelengths, and the current design requires a total of nine photodetectors (three [...]

High-Spatial Resolution Lidar Customer Case In Lidar, which is Laser Radar, spatial resolution is limited by the laser pulse width. This customer's laser pulse width is 3.5 ns. The total range interrogated by the Lidar system will be on the order of 250 meters. The customer needs to digitize the Lidar signal at 500 MS/s into 8 MegaSamples of memory. 8-bit digitizer resolution will be sufficient and they would also prefer to keep software programming at an absolute minimum. GaGe Case Solution Had the customer required higher resolution, say 12 or 14-bit, and sampling rates of 100 MS/s, then [...]

Ozone Profiling Customer Case Ozone profiling involves many averaging operations, which makes it very difficult to obtain the results immediately. There can be a delay of many days before a reliable reading is dispatched, which, by then, would be too late to take measures to protect the population and agriculture from the harmful effects. A customer has an Ozone profiling Lidar capable of downloading readings to a PC. The customer wanted to speed up the process of the averaging and analysis of the readings, also called data reduction, to near real-time speeds. This could be achieved if it was [...]

Radar Waveform Sampling & Processing Customer Case A customer involved in Naval Research needed to sample and process radar waveforms, to be used as reference in their lab. They were looking at implementing a digitizer solution. They needed 8-bit vertical resolution and a sampling speed of 500 MS/s. The customer also needed 2 GB of acquisition memory and wanted a portable solution. The customer also wanted to develop software in MATLAB and LabVIEW. GaGe Case Solution The customer was looking at the deepest acquisition memory available so they showed most interest in the CompuScope 8500. With its 8-bit vertical [...]

Polar Ice Thickness Measurements Customer Case The customer is an academic researcher in climate change. He wants to record the depth of the permafrost ice sheets in the arctic regions of Canada, Greenland and elsewhere. The change in world climate is directly related to the changes in the thickness of polar ice. Abrupt changes can be a predictor of climatic changes in the world. The measuring apparatus is an ice-penetrating radar mounted on an aircraft flying at 500-600 meters. The radar pulses at 20 kHz Pulse Repeat Frequency (PRF), captures the reflections of groups of 32-64 pulses. Each pulse [...]

Storm Watch / Tornado Radar Customer Case On average, the United States experiences 100,000 thunderstorms each year, causing about 1,000 tornadoes. The customer is trying to determine what meteorological conditions enable a large rotating thunderstorm (a "supercell") to drop a dangerous tornado-funnel. By determining what conditions must exist for the formation of an especially fierce tornado, researchers hope to develop accurate predictions of when and where such a tornado may touch down, giving the people time to evacuate. The customer wants to study tornadoes and other severe-storm features with an X-Band polarimetric Doppler radar. This mobile cloud-profiling radar is [...]