Is there a unit precise below 1 foot?

Discussion in 'GPS Technical Discussion' started by ericscher, Jan 12, 2018.

  1. ericscher

    ericscher

    Joined:
    Jan 12, 2018
    Messages:
    1
    Likes Received:
    0
    I am trying to find out whether there is a hand-held GPS unit that would be precise to a fairly fine level. I tried searching but either this specific question hasn't come up here yet or I was unable to find it.

    I've been researching for several days now and I have figured out that I will likely need what I believe is called a "Dual-Band" model.


    I'm looking for a level of precision on the order of One Inch or better.

    Horizontal accuracy is not as important as vertical accuracy. I want to be able to measure elevation with reasonable accuracy specifically for the purpose of installing drain tile or pipe without having to break out a Transit.


    So essentially, I am looking for a level of accuracy that is close to what is needed for Survey work and hopefully without a prohibitive cost.

    Cost range?

    Something that costs a few hundred dollars is fine. Something that is above $1,000 is getting into the range where it's probably not worth it.


    Thank you in advance for any help you are able to give me, even if it's just to tell me that what I am looking for does not yet exist.
     
    ericscher, Jan 12, 2018
    #1
    1. Advertisements

  2. ericscher

    Nuvi-Nebie Moderator

    Joined:
    Aug 16, 2015
    Messages:
    1,394
    Likes Received:
    115
    Location:
    UK
    I think your best bet is to look for new cell phones etc. that have the Broadcom L1/L5 Dual Band GPS chip in it (BCM47755), they are supposed to be launched some time in 2018 and claim sub 30cm accuracy, however I don't know of any launch dates for these products.

    Broadcom chip info. here :-
    http://gpsworld.com/big-news-from-broadcom-30-cm-positioning-for-consumers/
    and
    https://www.broadcom.com/products/wireless/gnss-gps-socs/bcm47755
    and
    http://gpsworld.com/positioning-with-android-gnss-observables/
    Scroll down to Next-Generation Phones
     
    Nuvi-Nebie, Jan 13, 2018
    #2
    Ian likes this.
    1. Advertisements

  3. ericscher

    Nuvi-Nebie Moderator

    Joined:
    Aug 16, 2015
    Messages:
    1,394
    Likes Received:
    115
    Location:
    UK
    Nuvi-Nebie, Feb 19, 2019
    #3
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads
Loading...