Digital IQ Triggering with Independent Acquisition Parameters
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Solution Overview
Problem
Existing digital triggering systems are limited in their ability to acquire data based on trigger events related to one signal processing parameter, as they typically rely on trigger channels and acquisition channels with shared signal processing parameters, restricting the variety of signal processing parameters that can be used for identifying and acquiring data.
Innovation Solution
A digital triggering system comprising two digital signal processors with independent signal processing parameters, where one processor generates a trigger signal based on a characteristic of IQ data and triggers the other to acquire data using a different parameter, allowing for diverse signal processing parameters to be applied for identifying and acquiring data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single digital signal processor is used for both triggering and data acquisition with shared signal processing parameters, then the system structure is simple, but the versatility of signal processing parameters is limited
Solution Approach 1:
The system divides the digital signal processing functionality into separate trigger channel and acquisition channel, each with independent digital signal processors. The trigger channel processor handles triggering with its own signal processing parameters, while the acquisition channel processor handles data acquisition with independent parameters, allowing both channels to operate with different parameter sets simultaneously
Solution Approach 2:
Each digital signal processor is designed to be multi-functional, capable of performing various signal processing operations with independently configurable parameters. This allows the same processor architecture to handle different signal processing tasks (triggering and acquisition) with different parameter configurations
2Productivity
If real-time capable hardware is used for the entire bandwidth, then data acquisition capability is enhanced, but system cost increases
Solution Approach 1:
The system applies different processing capabilities to different parts of the signal bandwidth. The trigger channel uses real-time capable hardware for critical triggering decisions, while the acquisition channel can use less expensive, non-real-time hardware for data collection, optimizing the balance between performance and cost
Data Source
AI summary
A digital triggering system for processing data relating to a signal received is described, with an analog-to-digital converter, an IQ data source providing IQ data, a first digital signal processor, and at least a second digital signal processor. The first digital signal processor is connected with the IQ data source via a first signal path. The second digital signal processor is connected with the IQ data source via a second signal path. The first digital signal processor has at least a first signal processing parameter. The second digital signal processor has at least a second signal processing parameter. The first signal processing parameter and the second signal processing parameter are independent from each other. The first digital signal processor generates a trigger signal based upon a characteristic of the IQ data obtained from the IQ data source. The first digital signal processor triggers the second digital signal processor via the trigger signal to acquire IQ data obtained from the IQ data source. Further, a method for processing data is described.