Doppler direction finder based on four-dimensional antenna array
A technology of a direction finding device and an antenna array, which is applied in the field of antenna engineering and can solve problems such as affecting the direction finding accuracy, Doppler frequency difference, and limited application range.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0033] Specific implementation plan
[0034] figure 1 The principle block diagram of a specific embodiment of the direction finding system based on the four-dimensional antenna array is given. The whole direction finding system consists of antenna element, phase shifter, radio frequency switch, complex programmable logic device (CPLD), power amplifier, pulse modulator, continuous oscillator, mixer, intermediate frequency amplifier, phase detector, Doppler filter The composition of the device. The antennas are shared for receiving and sending, including N=8 uniformly arranged units, and the unit spacing is half a wavelength. Each array element is connected to a radio frequency switch, and the radio frequency switch periodically on and off applies time modulation to the antenna array.
[0035] In the antenna transmitting stage, the array is modulated by variable aperture size timing (VAS); in the antenna receiving stage, the array is modulated by unidirectional moving phase center...
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap