Two-way multi-order related detection method for dual-polarization weather radar
A weather radar and related detection technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of difficult wide application, low level of weak signal detection, high noise power, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0098] It is implemented on an integrated signal processing platform based on DSP (Digital Signal Processor), which completes all signal processing from the radar intermediate frequency digitization.
[0099] Such as image 3 As shown, the dotted box is the realization platform of the method of the present invention. The dual intermediate frequency signals of the H channel and the V channel are respectively sent to the analog-to-digital converter ADC for digital sampling synchronously. The sampling process satisfies the sampling law (low-pass sampling law or band-pass sampling law), and digital quadrature identification is performed through a large-capacity high-performance FPGA Phase, output the digital in-phase / quadrature (I / Q) signal of H channel and V channel, and then send it to DSP for this algorithm processing. First, DSP caches the current I / Q data in DDR2 memory while processing the cached Complete I / Q data within a radial.
[0100] Before the weather echo detection...
Embodiment 2
[0102] It is implemented on an integrated signal processing platform based on PC (Personal Computer), which completes all signal processing from the radar intermediate frequency digitization.
[0103] Such as Figure 4 As shown, the PC is the main hardware carrier to complete the algorithm. The PCI-based data interface card is responsible for collecting the dual-channel in-phase / orthogonal data output by the FGPA, and writes data to the computer memory by interrupting the DMA regularly through the PCI bus. The main program responds to the interrupt, and processes the zero-order autocorrelation, first-order autocorrelation and zero-order cross-correlation of the H and V channels in a multi-threaded manner, and calculates the weight of the correlation according to the set weighting coefficients a, b, and c and, after obtaining the weighted sum result, compare it with the preset threshold to detect whether the weather target exists, and when the target is found, calculate the met...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com