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DIY Synthetic Aperture Radar

An anonymous reader lets us know about a DIY synthetic aperture radar built for $240 in parts (give or take). Here's PDF slideware from the Ph.D. student's research. "Using a discarded garage door opener, an old cordless drill, and a collection of surplus microwave parts, a high resolution X-band linear rail synthetic aperture radar (SAR) imaging system was developed for approximately $240 material cost. Entry into the field of radar cross section measurements or SAR algorithm development is often difficult due to the cost of high-end precision pulsed IF or other precision radar test instruments."

3 of 118 comments (clear)

  1. Stop Him Now by Philip+K+Dickhead · · Score: 5, Funny

    This could fall into the hands of terrorists.

    Citizens are consumers. We are passing Intellectual Property laws, to ensure that they remain so, and do not make the mistake of becoming producers.

    This man's brilliance sets another difficult example and precedent, which will be hard to contain or dismiss! I suggest a patent law-suit against him, and a criminal charges based on illegal production of weaponizable technology.

    --
    "Speaking the Truth in times of universal deceit is a revolutionary act." -- George Orwell
  2. A lot more than 240 by apepooooop · · Score: 5, Informative

    "A National Instruments PCI-6014 data acquisition card triggers radar pulses and digitizes the video data". http://sine.ni.com/nips/cds/view/p/lang/en/nid/11442 With a $700 (not counting accessories) data acquisition card.

  3. Re:Crooks by jschottm · · Score: 5, Insightful

    What's your point? The grocery store wants to sell me a red pepper for $2 that I could grow for a few cents. That doesn't make them crooks, it's just the nature of capitalism and value add. Raising your own produce is only cheap if you know how to do it, have the space to do it, and are willing to put in the time to do so. And if your time is free. The free market also provides other options - I can get them cheaper at the farmers' market, but only during certain portions of the year and only if I'm willing to shop at specific times. It's all about tradeoffs and what people are willing to pay for.

    The crooks are the people who charge $10,000 for something you can build in your garage for $50.

    Most people can't build anything of the kind for any amount of money. How many people do you think know how to solder? The reason why this guy was able to build this for $240 is because he has a $150,000+ education, is far above average, and has access to the tools needed to make this.

    Are you proposing that you get paid minimum wage once you graduate because students are willing to work for free or cheap on projects? Or do you expect to get paid enough to live above a student quality lifestyle, pay back student loans, support a family, etc.? Are you advocating for communism?

    Does your $50 test equipment have a warranty? Support? Certification? Documentation? Insurance covering damages if it should short out and burn down the lab? Can a replacement be overnighted from the factory if need be? Are you factoring in the fact that your university is subsidized by research grants, donors, and possibly the government (if it's a public school) which distorts true costs? Are your scavenged parts going to be reliable? Are you providing health insurance for the people building the gear? Unemployment insurance? FICA? Paying rent on the facility? Allowing for a middle salesman who'll be vital to getting your product into customers' hands?

    The basic fact of capitalism is that you price your product and/or service as high as you think the market will pay. Unless there's a monopoly, either you've priced yourself appropriately or someone will undercut you and you'll have to lower your prices or go out of business. There's nothing wrong with aiming for the high end of a market. If you can double your prices and still get half of your business, you're doing less work for the same money. Of course, your customers might not be very loyal as a result.

    If you think that the test equipment is overpriced, once you graduate, find some investors and start your own company with better pricing. But I'd recommend taking a few business classes first. Even if you got your parts, tools, shipping, and rent for free (and paid no taxes), you'd still have to make and sell 4 or 5 pieces of test equipment at $50/each every week just to pay yourself minimum wage.