Atmospheric Impacts
"Ducts" are more likely to form in these regions.
What are "over water and in tropical climates"?
Among other applications, _____________ radar is used to detect and display the aircraft’s position in the airport terminals.
What is Air Surveillance radar?
The use of airborne radars for weather tracking is preferred because ground-based radars are limited to directly detect precipitation ________ far from the radar site
What is "close to the ground"?
"The distance between crests" can be used to describe this variable.
What is wavelength?
Ducts may cause the radar energy to be diverted and not illuminate, or brighten with light, the regions below to form these phenomena.
What are radar holes?
To measure range and location of moving objects, ________ is used.
What is the Doppler Effect?
Implementation of this space could add true global coverage to weather weather capabilities.
What is space-borne radar?
_________ is the amount of increase required to double the transmit power.
What is "16-fold"?
The ____________ shows that the wind is coming toward the radar at one angle and away at a nearby angle
What is the "Doppler frequency shift"?
These are transmission lines for transmission of the radar signals.
What are Waveguides?
This provides the distance between the antenna and the ground directly below it.
What is a radar altimeter?
The use of stealth technology can decrease this variable in the Radar Range Equation
What is Radar Target Cross Section?
The earth’s atmosphere is less dense at higher altitudes, causing this propagation.
What is the "bending of radar waves"?
This type of radar receives echo signals from an object, and directs them towards the mixer, where they are mixed with the signal from a stable local oscillator (STALO).
What is the Moving Target Indicator (MTI) radar?
The AWACS uses this type of radar technology to send signals.
In describing the Minimum Detectable Signal (MDS), the criterion for the detection of an echo is that the target response must exceed that of the ___________ generated at the first stage in the receiver
What is the thermal noise?
This is a serious weather hazard to aircraft in the process of landing or taking off from an airport.
What is "the downburst, or microburst"?.
Doppler pulse weather radars employed by the National Weather Service are known as _________.
What is Nexrad?
This should be solved geometrically resolve slant and ground ranges in a flat-Earth geometry.
What is Pythagoras' theorem?
Antenna gain is the ratio of the signal strength in the direction of ____________?
What is "the strongest radiation of the antenna"?