초록 ▼

A present weather observing system including a radiation source for providing a beam of radiation in the atmosphere and a detector for detecting scattered radiation from suspended or precipitating particles within a sample volume, the detector having a field of view intersecting the beam to define t

A present weather observing system including a radiation source for providing a beam of radiation in the atmosphere and a detector for detecting scattered radiation from suspended or precipitating particles within a sample volume, the detector having a field of view intersecting the beam to define the sample volume. The invention further includes a device for determining the size and velocity of at least one particle precipitating through the sample volume, and an element responsive to the device for determining size and velocity for identifying the type of precipitation.

대표청구항 ▼

A present weather observing system comprising: means for providing a beam of radiation in the atmosphere; means, having a field of view intersecting said beam to define a sample volume, for detecting scattered radiation from particles within said sample volume; means for determining the size and vel

A present weather observing system comprising: means for providing a beam of radiation in the atmosphere; means, having a field of view intersecting said beam to define a sample volume, for detecting scattered radiation from particles within said sample volume; means for determining the size and velocity of at least one particle precipitating through said sample volume; and means responsive to said means for determining size and velocity for identifying the type of precipitation. A present weather observing system comprising: means for providing a modulated beam of radiation in the atmosphere; means, having a field of view intersecting said beam to define a sample volume, for detecting scattered radiation from particles within said sample volume and having at least one photoelectric element; means, responsive to said detecting means, for determining size and velocity of at least one particle precipitating through said sample volume, said means for determining size and velocity including means for resolving a signal due to at least one precipitating particle from signals due to suspended particles and due to signal noise created by said detecting means; and means, responsive to said detecting means and said means for determining size and velocity, for defining the atmospheric extinction coefficient.