Effects of detector bandwidth reduction on lidar signal processing
Abstract
Possible error sources introduced by the detection of lidar signals may be the length of the transmitted laser pulse and the electrical bandwidth of the receiver. Since, up to now no literature has been available, an investigation was made of the above mentioned error sources. It was proven that by using laser pulses as small as 20 ns FWHM, and a lidar that rates the signal after about 0.5 microsecond after transmitting the laser pulse, only very small errors appear. Using a receiver with limited bandwidth, unexpected serious errors are introduced in, e.g., the extinction coefficient derived from the measured signals. It is pointed out that an introduction of a time shift will compensate for this error.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1977
- Bibcode:
- 1977STIN...7826365K
- Keywords:
-
- Bandwidth;
- Error Analysis;
- Optical Radar;
- Radar Receivers;
- Signal Processing;
- Computer Programs;
- Computerized Simulation;
- Extinction;
- Low Pass Filters;
- Optimization;
- Signal To Noise Ratios;
- Communications and Radar