A data source establishment method for simulation based on CCD digital model
A technology of digital model and establishment method, applied to the parts of color TV, parts of TV system, TV, etc., can solve the problem of lack of signal source and so on
Active Publication Date: 2017-09-29
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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[0004] The technical solution problem of the present invention is: overcome existing technical deficiency, provide a kind of data source establishment method that is used for simulation based on CCD digital model, solve the problem that lacks signal source when video circuit FPGA software system simulation
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[0023] Such as figure 1 As shown, the FPGA integration time software, focal plane software and signal processing software constitute the video circuit FPGA software system, the FPGA software system test platform generates the excitation required for the integration time, and the integration time software generates the clock, Synchronization and three-wire serial port signals control the work of the focal plane software and signal processing software; the focal plane software generates CCD drive signals according to the received time and synchronous signals, and drives the CCD model to generate CCD digital signals; the signal processing software generates CCD digital signals according to the received time, The synchronous signal generates the AD driving signal, drives the AD model to perform correlation double sampling on the signal output by the CCD model, and performs data synthesis on the signal output by the AD model; finally, the FPGA software system test platform automatic...
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A method for establishing a data source for simulation based on a CCD digital model. AD performs correlated double sampling on the CCD analog signal to n different data, and uses n digital signals to simulate the CCD analog signal. When using AD for simulation, it is necessary to determine the sampling position set when the software under test configures the AD through the sampling value of the AD. According to the characteristics of AD’s correlation double sampling of the CCD analog signal, the value of the AD sampling is determined through the unique sequence of the difference, so as to determine sampling location. Therefore, establish a digital model of the CCD analog signal, simulate the CCD analog signal through n digital signals, find a sequence containing n numbers, and the difference between any two numbers in the sequence is unique, and use this n number as the value of the digital model of the analog signal. The invention is used in the FPGA software system simulation of the video circuit of the aerospace remote sensing camera, solves the problem that the analog signal source cannot be provided in the digital simulation, realizes the automatic verification of the system simulation, and improves the simulation efficiency.
Description
technical field [0001] The invention relates to a data source providing method for simulation based on a CCD digital model, which is used for system verification of FPGA software in a video circuit of an aerospace remote sensing camera. Background technique [0002] Today, with the development of FPGAs to the million-gate level, the functions implemented by FPGAs are becoming more and more complex, and the software is getting bigger and bigger. In order to ensure the reliability of FPGA products, FPGA software must be fully verified. Verification work has accounted for 70% of the entire FPGA design workload, so the efficiency of verification work determines the reliability and development efficiency of this FPGA product design. The requirements for reliability in aerospace applications are more stringent, so the verification of FPGA products in aerospace remote sensing cameras is even more important. [0003] When performing simulation verification on FPGA software, if the ...
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IPC IPC(8): H04N5/372H04N17/00
Inventor 王蕴龙包斌崔雪楠张京晶周志娟
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH