Forest fire early recognition and early warning method based on X-band dual-polarization phased array radar
A phased array radar, an early identification technology, applied in the reflection/re-radiation of radio waves, radio wave measurement systems, and the use of re-radiation. , to achieve the effect of high accuracy, reduced interference, and low empty report rate
Pending Publication Date: 2021-10-01
广州市气象台 +1
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[0012] The X-band dual-polarization weather radar it uses is a traditional mechanical scanning system weather radar, which has the disadvantages of slow scanning speed and difficulty in real-time adjustment of the scanning mode; in addition, the scheme is relatively simple, and it is only based on the echo area of the echo block obtained by the radar. Due to the lack of full use of the spatial structure characteristics of forest fire echoes and polarization parameter characteristics such as differential reflectivity ZDR, the probability of false alarms and empty reports is still relatively high. For minute-level evolution events such as early forest fires, it especially affects early warning and rescue. and other effects, so a new technical solution is proposed
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[0053] The following is attached Figure 1-10 The application is described in further detail.
[0054] The embodiment of the present application discloses an early forest fire identification and early warning method based on an X-band dual-polarization phased array radar.
[0055] refer to figure 1 , the early forest fire identification and early warning methods based on X-band dual-polarization phased array radar include:
[0056] Obtain the radar echo intensity map of the X-band dual-polarization phased array radar;
[0057] Filter the isolated clutter echo in the radar echo intensity map to obtain primary processing data;
[0058] Identify once-processed data, get the echo area whose echo intensity is greater than a given threshold and are connected to each other, define it as a 2D echo area, and vertically correlate the 2D echo monomer (referring to a single area) from the low layer to the high layer, Get 3D echo area;
[0059] Discrimination of suspected forest fires b...
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The invention discloses a forest fire early recognition and early warning method based on an X-band dual-polarization phased array radar, and belongs to the technical field of forest fire supervision. The method comprises the steps of: obtaining a radar echo intensity graph of the X-band dual-polarization phased array radar; filtering isolated clutter echoes in the radar echo intensity map to obtain primary processing data; identifying the primary processing data to obtain echo areas which have echo intensity greater than a given threshold and are communicated with each other, defining the echo areas as 2D echo areas, and vertically associating 2D echo monomers from a low layer to a high layer to obtain 3D echo areas; performing suspected forest fire discrimination based on the identified multiple characteristic parameters of the 3D echo areas; determining and distinguishing the distinguished suspected forest fire based on the polarization parameters to obtain forest fire data; and recording the identification time of the forest fire data and other auxiliary parameters, and sending forest fire early warning information to a set address. The method has the effect of improving the accuracy of forest fire recognition.
Description
technical field [0001] This application relates to the technical field of forest fire supervision, in particular to an early forest fire identification and early warning method based on X-band dual-polarization phased array radar. Background technique [0002] At present, the main means of forest fire monitoring include satellite monitoring, video surveillance, manual patrol, aviation patrol, etc. In recent years, drone technology has developed rapidly and has also been applied to forest fire monitoring. [0003] In addition to the above monitoring methods, research in recent years has found that the weather radar deployed by the meteorological department can not only monitor precipitation, but also monitor forest fire echoes. The principle of weather radar detecting forest fires is similar to that of detecting precipitation particles, that is, the electromagnetic waves emitted by the radar encounter echoes generated after encountering backscattering objects raised by the he...
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IPC IPC(8): G01S13/88G01S7/41
CPCG01S13/886G01S7/41
Inventor 张羽陈炳洪胡胜刘显通许欢田聪聪夏丰
Owner 广州市气象台