What is the purpose of sea clutter on radars?
Sea clutter refers to the radar returns from a patch of ocean surface. When a radar detects targets on or above the sea surface, it has to overcome the interference from sea echo itself.
What does ground clutter look like on radar?
False radar echoes typically seen from ground clutter (blues, greens and purple colors) centered around radars such as this one from the National Weather Service radar in Joliet, IL. There are occasions when it will be difficult to determine if what you see on radar are real echoes.
What is clutter in a scope display?
Therefore, in competition with the return from an aircraft, there are many sources of unwanted signals. Unwanted signals in a search radar are generally described as noise and clutter. Clutter is the term used and includes ground returns, sea returns, weather, buildings, birds and insects.
What are the features of the rain clutter?
This phenomenon is known as rain clutter. The absorption of the EM energy is mainly dependent on precipitation rate, its type and extent, radar operating frequency and its polarisation. The attenuation increases with both frequency and the rainfall rate and is usually expressed in decibels per kilometre.
What does STC means in the radar sea clutter control?
Sensitivity Time Control (STC) This control is used with a circuit which is designed to suppress sea clutter out to a limited distance from the ship.
What is the difference between noise and clutter?
As nouns the difference between noise and clutter is that noise is various sounds, usually unwanted while clutter is a confused disordered jumble of things.
What is sea clutter and rain clutter?
Sea clutter is produced by reflections from the sea. It is affected by wave height, wind direction and the antenna height above sea level. It may extend outward as far as 5 nautical miles. Rain clutter is produced by reflections from rain, snow or fog.
What is noise and clutter?
What is clutter attenuation in radar?
Clutter is a term used to describe any object that may generate unwanted radar returns that may interfere with normal radar operations. In many cases, the clutter signal level is much higher than the receiver noise level.
What types of clutter are there?
Even folks with spotless homes can feel overwhelmed by clutter.
- Physical clutter.
- Digital clutter.
- Mental clutter.
- Emotional clutter.
- Spiritual clutter.
Which antenna is used for radar?
Among the different types of reflector Antennas, the simple parabolic reflectors and the Cassegrain feed parabolic reflectors are the most commonly used ones.
How do you know if VRM is accurate?
For accurate range measurements, the circle described by the VRM should be adjusted so that it just touches the inside edge of the pip. On most radar indicators bearings are measured by setting the mechanical bearing cursor to bisect the target pip and reading the bearing on the bearing dial.
What is radar clutter and how to prevent it?
Definition: Radar Clutter is defined as the unwanted back-scattered signals or echoes generated from physical objects in the natural environment like ground, sea, birds, etc. Due to the presence of clutter the detection of target by the radar system in the environment becomes difficult.
What is the difference between sea-clutter and ground clutter?
This clutter gets also a Doppler- speed by the wind. This means, the scenario “moves away”, i.e. changes with time, while for ground clutter it stays the same. Therefore, in practice, Sea-clutter is very difficult to control without some loss in detection.
What is velocity-sensitive radar?
Since aircraft usually move much faster than weather or surface targets, velocity-sensitive radar can eliminate unwanted clutter from the radar indicator. Radar systems that detect and process only moving targets are called M oving- T arget I ndicators ( MTI ). Surface Clutter – Ground or sea returns are typical surface clutter.
What is “surface clutter?
Surface Clutter – Ground or sea returns are typical surface clutter. Returns from geographical land masses are generally stationary, however, the effect of wind on trees etc means that the target can introduce a Doppler Shift to the radar return.
https://www.youtube.com/watch?v=KKH8u0EBwlQ