Multichannel Telemetry Data Acquisition Using a Synchronous DSP Filtering Approach
AffiliationL-3 Communications Telemetry East
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AbstractToday's telemetry data acquisition systems demand an increased number of highly configurable acquisition channels delivering synchronized data samples in a specific format . At the same time, there are additional requirements that these systems be compact and cost effective. In order to design such systems, novel approaches in digital signal processing are required. In this paper, we compare the typical analog signal sampling approach used in current systems with a flexible system architecture that is based on digital signal processing, allowing for precise synchronization and simultaneous sampling. An appropriate DSP filter structure is discussed, and a Xilinx FPGA based implementation example of this multi-channel filter that utilizes a minimal number of key signal processing components while easing the analog component requirements is presented.
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