Which ground penetrating radar is better?
Ground Penetrating Radar (Ground Penetrating Radar. GPR) is a geophysical method that uses antennas to transmit and receive high-frequency electromagnetic waves to detect the properties and distribution of materials inside the medium. There are many names for ground penetrating radar in the early days. Such as ground probing radar (Ground-probing Radar), underground radar (Sub-surface Radar), ground radar (Geo Radar), pulse radar (Impulse Radar), surface penetrating radar (Surface Penetrating Radar), etc. It is an electromagnetic wave method for prospecting targets and using high-frequency pulse electromagnetics to detect the internal structure of geological targets.
About Screening Eagle Technologies
Screening Eagle Technologies (Screening Eagle Technologies), formed by the merger of Proceq, a Swiss non-destructive testing instrument brand, and Dreamlab, a Singapore robotics company, is Provides a technology platform for intelligent detection in the building and infrastructure construction industry.
“Protect the built world” (Protect the built world) – Patrol Eagle’s mission is to use intuitive software, portable sensors and reliable data to protect fixed assets and infrastructure in the construction field, and implement decisions for construction and asset maintenance Defect detection, data collection and condition assessment, and enable effective preventive diagnosis and maintenance recommendations, thereby prolonging the life of fixed assets and infrastructure and increasing the long-term value of the owner.
For more information about GPR, please contact GPR manufacturerOfficial Website of Patrol Eagle https://www.screeningeagle.com/zh for more information
What is Stepped Frequency Continuous Radar Wave Technology (SFCW)
With the progress and development of contemporary society and science, human society has higher and higher requirements for radar functions. It is not only required that the radar can measure the distance information of the target, but also the speed, phase and acceleration of the target; sometimes It is necessary for the radar to be able to perform one-dimensional, two-dimensional or even three-dimensional imaging of the target.
At present, the radar system is divided according to the type of its signal source: ● pulse frequency radar ● frequency modulation continuous wave radar ● step frequency continuous wave radar, and so on. For pulse radar and frequency modulation continuous wave radar, because of its early development of signal source technology, the technology and application are relatively mature.
However, the frequency source of stepped frequency continuous wave radar was developed relatively late. It was also at the end of the 1960s that American scholars Ruttenburg K and Chanzi L proposed a new technology to improve the range resolution of radar, which is to use a series of jumping pulse signals to replace the previous common radar frequency source. This is the prototype of the early step frequency signal.
In recent years, with the deepening application of radar wave and integrated circuit technology, step frequency technology has been greatly developed and widely used in the field of civilian radar, such as ground penetrating radar, wall-penetrating radar and even vehicle-mounted radar for intelligent transportation.
With its unique feature, it uses a small instantaneous bandwidth and can synthesize a larger working bandwidth due to continuous frequency hopping during operation. This feature can greatly improve the radar resolution and reduce the system. Therefore, the research on the stepped frequency source and its transceiver system has been paid more and more attention by researchers at home and abroad.
In 1997, Cape Town University developed a low-cost, small-volume portable step-frequency radar Mercury-A;
In 2000, Alberti and others in Italy developed the CORISTA remote sensing detection system by using a stepped frequency source, which has achieved great applications in archaeological research;
In 2005, Samsung developed a step-frequency ultra-wideband radar system with a wide frequency range of 600-5,600MHz;
In 2009, AKELA Corporation of the United States developed a wall-penetrating radar with a stepping frequency source, with a frequency range of 500-2,000MHz and a bandwidth of 1.5GHz. Due to its wide bandwidth, the distance resolution of the radar system can reach 0.1m ;
In 2012, D. Seyfried and others applied the stepped frequency radar technology to the field of underground detection. The frequency range of the radar is 200-1,500MHz, which can effectively detect the condition of pipelines and cables buried 3-5m deep underground;
In 2014, Liu and Sato et al. applied step frequency radar to the field of civil engineering. The radar frequency range is 500-6,000MHz, which is mainly used to detect parameters such as road thickness, layering and dielectric constant.
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Screening Eagle Technologies (Screening Eagle Technologies) China official website: https://www.screeningeagle.com/zh
