Digital processing module for short-wave two-dimension direction-of-arrival estimation
A technology of direction estimation and digital processing, which is applied to the direction/bias determination system of radio waves, direction finders using radio waves, etc., and can solve problems such as inconvenient software transplantation.
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[0058] The following structural drawings further illustrate the present invention.
[0059] like figure 1 As shown, the shortwave two-dimensional direction of arrival estimation digital processing module can receive and process 10 shortwave channel intermediate frequency signals, and uses OMAP3530 as the control chip in the module. The chip contains ARM Cortex-A8 core and TMS320C64x series DSP processor. The software is compatible with ARM9 and C64x, which is conducive to platform porting, and uses TI's SmartReflex technology to achieve low power consumption. The FPGA adopts Cyclone II FPGA from Altera Company, which has fast operation speed. The A / D uses 10 pieces of AD9244, and 3 pieces of down-conversion chip HSP50216 are used. The FPGA chip is used for logic control processing and two-dimensional wave direction estimation calculation, and the CPCI interface chip is selected. PCI9054.
[0060] The OMAP chip reads in external control commands through the CPCI bus, and at th...
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