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Topic: GPS taking into account floors

There is such here a practical task. It is interesting not from the point of view of application really and how to solve it. There are such people as  which go shopping and  there through mobile application. And sootv th coordinates  are checked with shop coordinates in basis and if dispersion no more than 100 m that is considered that  visited shop. And so how to solve a problem when shop is in the same house where lives ? That is he woke up without quitting apartment made , and itself houses. After all at  there is no concept of height like. I see only to do a photo, but there it is possible to forge date time too. We do not consider cases that  it is possible to deceive any applications, is interesting in such description to solve the task.

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Re: GPS taking into account floors

Hello, merge, you wrote: M> After all at  there is no concept of height like. Is. The problem is faster that positioning accuracy in a concrete box of shopping center very doubtful. And for some reason it seems to me that the solved problem dares not algorithmically. Even if  comes into shop, makes nothing and quits is does not solve the business task. Most likely a motivation question.

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Re: GPS taking into account floors

Hello, gandjustas, you wrote: G> Hello, merge, you wrote: M>> After all at  there is no concept of height like. G> Is. Did not know that such it is possible G> the Problem more likely that positioning accuracy in a concrete box of shopping center very doubtful. They  from street, not in a box. G> and for some reason it seems to me that the solved problem dares not algorithmically. Even if  comes into shop, makes nothing and quits is does not solve the business task. Most likely a motivation question. It too is. Other people and other means are engaged in it. Application as one of components

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Re: GPS taking into account floors

Hello, merge, you wrote: M> And so how to solve a problem when shop is in the same house where lives ? That is he woke up without quitting apartment made , and itself houses. Allow  to have a sleep easy! Well for people... PS: from  harm more than favor, especially in their RF'OVSKY understanding - to remove products from customary places and to put on their place a hogwash any.

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Re: GPS taking into account floors

Hello, Glory, you wrote: Hello, merge, you wrote: M>> And so how to solve a problem when shop is in the same house where lives ? That is he woke up without quitting apartment made , and itself houses. Allow  to have a sleep easy! Well for people... There was a case that at  there was one  per day and it actually was at home. Before did not know that he there lives

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Re: GPS taking into account floors

Hello, merge, you wrote: M> Hello, gandjustas, you wrote: G>> Hello, merge, you wrote: M>>> After all at  there is no concept of height like. G>> Is. M> did not know that such probably I Think a myth that in GPS there is no height arose for two reasons: 1. In themselves all GPS receivers calculate coordinates in XYZ (Orthonormal system), and from XYZ it is possible to receive easily latitude, a longitude and height. But the height will be over ellipsoid WGS-84, and the most widespread NMEA protocol, recommends to produce height over  that demands concerning the big table for conversion. Therefore earlier (I do not know as now) many cheap gps  produced only frame NMEA with latitude and a longitude. 2. The signal from companions below horizon level for the clear reasons does not accept the receiver. Differently there are companions on the right, at the left, ahead, behind and on top, but not from below, therefore accuracy of determination of height even in an open country is always worse, time in 1.5. That is if at you the given threshold of an error on a longitude and latitude 100 for height it is necessary to take 150, whether helps it to you?

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Re: GPS taking into account floors

Hello, merge, you wrote: M> It is interesting not from the point of view of application really and how to solve it. On a poppy to addresses of wifi-points yes M> There are such people as  which go shopping and  there through mobile application. Yes  you already on them a brand also dress shackles. And that  here different without business.

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Re: GPS taking into account floors

M> After all at  there is no concept of height like. There there is only one concept: time of traveling of a signal from the companion to the chip. Which is multiplied by a velocity of light. The data about position of companions is sewn up in the chip, or somehow transferred to it. In your case after calculations the point in space will be received. The more companions it is visible in  reception, the calculations are more exact. Now write an error: 1-5 meters, can reach to 100 m. There is a class of systems which can lower an error to 1 see to Define distance from a card anchored to JPS it is possible (I am not assured, but it seems to me that in these cards the height above sea level) is put. Or you should make the cards for your application.

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Re: GPS taking into account floors

Hello, kov_serg, you wrote: _> Hello, merge, you wrote: M>> It is interesting not from the point of view of application really and how to solve it. _> on a poppy to addresses of wifi-points yes if a house router unless it is possible to understand, what it from the house connected or means, what it is possible to understand, what the connection goes through  that most likely from the house? Implementation, and the decision to invent is interesting to me not

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Re: GPS taking into account floors

Hello, merge, you wrote: M> if a house router unless it is possible to understand, what it from the house connected or means, what it is possible to understand, what the connection goes through  that most likely from the house? M> implementation, and the decision to invent the Decision of what task is interesting to me not? To  it connect. If it performs the operation and the goods does not lie too long, on which it to track? What for to measure where it walks and what smokes? Track indexes which immediately influence profit is better.

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Re: GPS taking into account floors

Hello, kov_serg, you wrote: _> the Decision of what task? To  it connect. If it performs the operation and the goods does not lie too long, on which it to track? What for to measure where it walks and what smokes? Track indexes which immediately influence profit is better.  it is necessary to enter similarity of the Unconditional Main Income because from other operation there is no favor. And for so to people to pay  -  should work! This religious.

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Re: GPS taking into account floors

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Re: GPS taking into account floors

Hello, Eugen, you wrote: E> There there is only one concept: time of traveling of a signal from the companion to the chip. Not to the chip, and to the antenna (it is probable, it is integrated into the chip, but nevertheless  for the sake of...) E> the Data about position of companions is sewn up in the chip, or somehow transferred to it. In the protection chip prn companions, for decoding of a signal for each companion. Position is learned through transmission of onboard ephemerises from companions on the receiver. E> there is a class of systems which can lower an error to 1 What systems see? rtk can produce centimeters (> 1) exactitudes, but quickly. Postprotsessingovaja handling can already give to 1. But (long static observations are necessary for the receiver many.

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Re: GPS taking into account floors

Hello, merge, you wrote: M> There are such people as  which go shopping and  there through mobile application. What does it do, besides, that ? M> And sootv th coordinates  are checked with shop coordinates in basis and if dispersion no more than 100 m that is considered that  visited shop. M> and so how to solve a problem when shop is in the same house where lives ? That is he woke up without quitting apartment made , and itself houses. Not to take on operation of for whom it is necessary to track and kick permanently what to receive result. M> after all at  there is no concept of height like. Is.

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Re: GPS taking into account floors

Hello, Kodt, you wrote: Instead of whether to suggest them to do the photo-report on operation is easier? Came into shop, it was clicked against the calculation of the goods and-or in the presence of the shiftman, at the same time in EXIF will be both time, and geolocation (plus-minus a bast shoe on a card). And it is possible to check up at desire that it useful did something, instead of coffee of saws in an adjacent snack bar. Is total to check optionally: conscience - the best controler, (and selection check - ). Better let videos remove on  spread, and who more  collects, that not to beat .

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Re: GPS taking into account floors

Hello, merge, you wrote: M> And so how to solve a problem when shop is in the same house where lives ? That is he woke up without quitting apartment made , and itself houses. M> after all at  there is no concept of height like. Is, but errors plus-minus of 20 meters. M> I see only to do a photo, but there it is possible to forge date time too. Today's release of the newspaper is bought and becomes  with the newspaper in hands. To forge difficult.

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Re: GPS taking into account floors

Hello, merge, you wrote: M> we do not consider cases that  it is possible to deceive any applications, is interesting in such description to solve the task. Well probably it does not make sense to use for this purpose  https://en.wikipedia.org/wiki/Bluetooth … rgy_beacon

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Re: GPS taking into account floors

Hello, fk0, you wrote: fk0> today's release of the newspaper Is bought and becomes  with the newspaper in hands. To forge difficult. I such in films saw)

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Re: GPS taking into account floors

Hello, fk0, you wrote: M>> I See only to do a photo, but there it is possible to forge date time too. fk0> today's release of the newspaper is bought and becomes  with the newspaper in hands. To forge difficult. ) AI here does not help