Low-frequency radar works using radio waves with longer wavelengths, usually in the range of tens to hundreds of meters. These radar systems are effective for long-term detection and tracking of large objects such as aircraft and ships due to their ability to propagate over greater distances and penetrate atmospheric conditions like fog and precipitation. Low-frequency radar uses lower frequencies, which require larger antenna structures but provide advantages in range and resilience to environmental interference.
They are commonly used in air traffic control, long-range surveillance and maritime applications where detection of objects at extended distances is essential.
High-frequency radar, unlike low-frequency radar, operates using shorter wavelength radio waves, typically ranging from several centimeters to meters. These radar systems are suitable for short to medium applications requiring high resolution and accuracy in detecting small objects such as vehicles, drones and weather conditions.
High-frequency radar offers advantages in spatial resolution and sensitivity to smaller targets, but may be more sensitive to atmospheric attenuation and absorption, limiting their effectiveness over longer ranges or in weather conditions. unfavorable.
Radar frequency refers to the wavelength of radio waves used by radar systems to transmit and receive signals. Radar frequency selection depends on specific application requirements, such as range, resolution and environmental conditions.
Lower frequencies (e.g., L-band and below) are used for surveillance and long-range penetration through obstacles, while higher frequencies (e.g., X-band and above) provide resolution and higher sensitivity to smaller targets but over shorter ranges. Radar frequency affects the performance of the radar system in terms of detection capability, accuracy and operational suitability for different environments and scenarios.
HF radar, or high frequency radar, typically operates in the frequency range of 3 to 30 MHz.
It is used primarily for horizon radar applications where it can detect and track targets beyond line of sight due to the ability of HF signals to propagate long distances via ionospheric reflection. HF radar systems are used for surveillance of air and maritime traffic over wide areas, providing early warning capabilities and surveillance of remote areas where other radar systems may not be practical. HF radar is evaluated on its ability to cover large geographic areas and its resilience to atmospheric conditions and electromagnetic interference