Description: 基于采样率变换和循环卷积的GPS信号快速捕获。提出了一种适用于GPS软件接收机的C/A码和多普勒频移的快速捕获算法。该算法结合了采样变换FFT和时域卷积两种方法，提高了捕获速度和多普勒频移的精度。-Based on the sampling rate conversion and fast circular convolution of the GPS signal capture. Presents a GPS receiver software for C/A code and Doppler shift of the fast acquisition algorithm. The algorithm combines the time-domain sampling transform FFT and convolution are two ways to improve the capture speed and accuracy of the Doppler frequency shift. Platform: |
Size: 528384 |
Author:haodiangei |
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Description: F2812 AD校正算法，提高转换精度。（CCS3.3开发环境）。 AD采样频率为10K，利用通用定时器T1的周期中断事件来启动AD转换。ADCINA0和ADCINB0为参考电平，实际的电压值分别为0.420和1.653。对ADCINA0、ADCINA1、ADCINB0、ADCINB1四个通道进行连续10次的采样，然后对各个通道的10个采样值进行排序，滤波，最后取平均值。然后由ADCINA0和ADCINB0通道的值计算求得CalGain和CalOffset，最后由这两个量来校正ADCINA1和ADCINB1。-F2812 AD correction algorithm to improve the conversion accuracy. (CCS3.3 development environment). AD sampling rate of 10K, the use of general-purpose timer T1 cycle interrupt event to start the AD conversion. ADCINA0 and ADCINB0 the reference level, the actual voltage values were 0.420 and 1.653. Of ADCINA0, ADCINA1, ADCINB0, ADCINB1 four channel sampling for 10 times, then 10 of each channel samples to sort, filter, and finally averaged. Then ADCINA0 and ADCINB0 channel value obtained CalGain and CalOffset, the last two by the amount of correction ADCINA1 and ADCINB1. Platform: |
Size: 356352 |
Author:奋斗不止 |
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Description: 采样率转换器的缩写，如果SRC并非进行整数倍转换时，就会出现噪音，而噪声的大小由转换器本身以及算法的优劣来决定。相比之下硬件的SRC算法会出色很多。-Sampling rate is the abbreviation of converter, if not on SRC integer times conversion, can appear noise, and the size of the noise by the converter itself and the character of the algorithm to determine the hardware of the algorithm is compared SRC will well a lot Platform: |
Size: 17408 |
Author:丁伟 |
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