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>Hi All,
>First of all let's ask ourselves what the microcontrollers would be for. What are we going to achieve using these chips? What kind of singal analysis would be usefull and informative?
>The computerized detectors I know use controllers for:
>- calculating and displaying target IDs (many types)
>- analyzing target size (GTIs)
>- ground cancelling (Minelab detectors)
>- generating waveforms (PIs)
>What feature you are going to include in yours prototypes?
>Personally, I would welcome non-motion target identifying detector (regardles of object depth and size) that totally ignores ground.
>Any ideas?
>Piotr
In my opinion, uC chips are more useful as a control method, not as a processing method. For example, in the PI design it controls waveform timing (both TX & RX) but does not actually generate the waveform or process it.
For truely analyzing targets I would use a high speed sampling ADC and DSP. For true waveform generation I would probably use a DDS chip (at least for IB). For example, with DDS in a chirp mode and DSP processing you could do spectrum analysis and have a hell of a target ID machine. For PI, you could sample and process the decay curve to a much higher degree and possibly get more target info.
My goal is to learn how to use the uC chip to control all of the other devices. Otherwise, you end up with A LOT of knobs. I expect that, until I figure out how to set up an LCD interface, I will program my prototypes through a laptop.
- Carl
>First of all let's ask ourselves what the microcontrollers would be for. What are we going to achieve using these chips? What kind of singal analysis would be usefull and informative?
>The computerized detectors I know use controllers for:
>- calculating and displaying target IDs (many types)
>- analyzing target size (GTIs)
>- ground cancelling (Minelab detectors)
>- generating waveforms (PIs)
>What feature you are going to include in yours prototypes?
>Personally, I would welcome non-motion target identifying detector (regardles of object depth and size) that totally ignores ground.
>Any ideas?
>Piotr
In my opinion, uC chips are more useful as a control method, not as a processing method. For example, in the PI design it controls waveform timing (both TX & RX) but does not actually generate the waveform or process it.
For truely analyzing targets I would use a high speed sampling ADC and DSP. For true waveform generation I would probably use a DDS chip (at least for IB). For example, with DDS in a chirp mode and DSP processing you could do spectrum analysis and have a hell of a target ID machine. For PI, you could sample and process the decay curve to a much higher degree and possibly get more target info.
My goal is to learn how to use the uC chip to control all of the other devices. Otherwise, you end up with A LOT of knobs. I expect that, until I figure out how to set up an LCD interface, I will program my prototypes through a laptop.
- Carl
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