radar echo

Thân thiện

A radar echo appears as a bright dot on the screen.

Definition

1. Noun:
   • A reflected electronic signal: A radar echo is the specific portion of a transmitted radio wave that bounces back (is reflected) from an object and returns to the radar's receiving antenna. This returned signal carries data used to detect and locate the object.

Usage

• The term is used to describe the fundamental physical phenomenon of signal reflection in radar systems. It is the raw data point from which information is extracted.
• It is commonly discussed in contexts of detection, strength, and analysis. For example, a strong indicates a large or highly reflective object, while a weak one might be from a small or distant object.

Examples

• Noun:
  • The meteorologist observed a strong radar echo moving towards the coast, indicating a severe thunderstorm.
  • Air traffic control relies on the radar echo from an aircraft's transponder to identify and track its precise location.
  • The faint radar echo was analyzed and determined to be from a flock of birds, not an aircraft.

Advanced Usage

• "Radar echo signature": Refers to the unique pattern or characteristics of a that can help identify the type of object (e.g., aircraft, weather formation, terrain).
  • The distinctive radar echo signature of hail allowed forecasters to issue a timely warning.

Variants and Related Words

• Echo (n): In a general sense, any reflected wave (sound or electromagnetic). A is a specific type of electromagnetic echo.
• Return (n): Often used synonymously with in technical contexts (e.g., "radar return").
• Blip (n): An informal term for the visual representation of a on a display screen.
• Radar target (n): The object that produces the .

Synonyms

• Reflected signal: A more general descriptive term.
• Radar return: A direct technical synonym.

Related Phrases

• To get/give a radar echo: To receive or produce a reflected signal.
  • The stealth aircraft is designed not to give a strong radar echo.
• Echo strength/intensity: Refers to the power of the returned signal.
  • The echo intensity decreased as the storm moved away.

Học thuật

Noun

1. an electronic signal that has been reflected back to the radar antenna; contains information about the location and distance of the reflecting object