[ARDF] ARDF Digest, Vol 101, Issue 3

Tue Jan 3 12:09:46 PST 2012

Did another compass test with my prototype app on ios 4.0.1 iPhone 4. I was taking a bearings from about 1k away to TX and cross bearings were beetween 50-75 meters off. Which is not bad for built in compass. But I had no receiver or any metal objects with me and was pointing iphone across 1k wide lake to noticable feature from different locations.

Just an update.

Sent from iPhone

Jan 3, 2012, в 15:00, ardf-request at kkn.net написал(а):

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> Today's Topics:
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>   1. Re: Looking ahead to ARDF apps (in 2012) (Charles Scharlau)
>   2. Re: Looking ahead to ARDF apps (in 2012) (Tony Langdon)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 2 Jan 2012 17:37:19 -0500
> From: Charles Scharlau <charles.scharlau at gmail.com>
> Subject: Re: [ARDF] Looking ahead to ARDF apps (in 2012)
> To: ardf at kkn.net
> Message-ID:
>    <CAK-Giwayfo_cVnsKWPN_L2qG=Lhh698NpLT5EG41ixu=19X3tQ at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> In my previous e-mail on this subject it seems I've created some confusion
> regarding what the app is all about. I was trying to avoid providing a
> laundry list of features. But maybe a list is in order just to clarify what
> it can and can't do. I'll keep it to 10 items.
> 
> The app is not named yet, but for simplicity let's just call it "Map and
> Compass" (or M&C), since that's central to what it is and does.
> 
> Here's an ordered list of M&C's more salient features:
> 
> 1. M&C stores and displays an off-line map. It can be a map that you, or
> your orienteering club, has created. So, if you like, you can use a genuine
> orienteering map, not just some street map. (There are free tools available
> for creating such maps. I can provide more information to those who are
> interested.)
> 
> 2. M&C can display a street map too! One from the internet, but not Google
> Maps. Instead it will show you Open Street Maps, or Open Cycle Maps which
> include rudimentary elevation lines.
> 
> 3. M&C allows you to zoom and scroll the map. If you've ever used the
> Google Map app, M&C works the same way: pinch to zoom, swipe to scroll. It
> brings a new dimension (literally) to orienteering maps.
> 
> 4. M&C can use the GPS in your mobile device to determine your location and
> display it on the map. The icon for your position is a little arrow that
> also shows your current heading (the direction that your phone is pointed).
> 
> 5. M&C lets you place controls, including Start and Finish, on your map.
> They will appear as the familiar pink triangle, circle and double-circle.
> You can place the control locations manually using M&C, or you can download
> a .KML file (that is easily created using Google Earth) to download a whole
> course (orienteering or ARDF) to the app.
> 
> 6. M&C lets you place bearings on the map, and M&C displays those bearings
> separately for each "target control" for which you take bearings. M&C
> calculates crossing positions for those bearings, and displays the best
> estimate of the target location based on all the bearings taken. M&C also
> stores the bearings to a separate .KML file that you can upload to Google
> Earth (running on your PC) for further analysis - or for sharing with your
> friends.
> 
> 6. Once you have controls (or bearings) on the map, M&C will assist you in
> navigating to those controls. Firstly, it helps by showing you your
> position on the map, along with the locations of the controls to which you
> are navigating. In addition, M&C calculates the direction and distance to
> the controls, and displays that information for you, and even places an
> arrow on the display pointing you in the right direction.
> 
> 7. M&C provides an audio tone indication of how accurately your mobile
> device is pointed at a control. If you point your iPhone toward a control,
> the volume of the audio tone increases, and as you point your iPhone away
> from the control the audio tone volume decreases. Think of it as an "audio
> compass" that steers you always in the direction of your target control.
> 
> 8. M&C can make the audio tone send Morse Code characters for the name of
> the control target you are tracking. The effect is very much like tracking
> down an ARDF transmitter, especially if you have chosen to name your
> controls "MOE", "MOI", "MOS", etc.
> 
> 9. M&C can record where you've been and the times you were there, and
> places that information into a separate .KML file that you can upload to
> Google Earth (running on your PC) for further analysis - or for sharing
> with your friends who are by now getting tired of all your data!
> 
> 10. M&C runs on all iOS devices: iPhone, iPad and iPod touch. But those
> devices lacking GPS or digital compass will not support all M&C features.
> 
> M&C has more features that might be of interest, and still more that are
> possible down the road. Right now the app shows promise of providing a
> realistic simulated-ARDF or orienteering experience. But just as important
> as its realism is that a simulated event can be much simpler and cheaper
> hold, and can be much less frustrating and more engaging to newcomers.
> 
> Hundreds of hours of work have gone into M&C, and there is still plenty of
> work to be done to make it reliable and user-friendly enough for launch. I
> would appreciate assistance from anyone willing to devote some time to
> testing it, and providing me with feedback on your experiences. In exchange
> I will be happy to assist you with creating an off-line map file of your
> area that you can use with M&C. You will also have free access to M&C after
> it launches on the App Store.
> 
> I estimate M&C will be ready to start beta testing in about 6 weeks. So
> give it some thought, and please contact me off list if you feel you can
> participate.
> 
> 73,
> Charles
> NZ0I
> mailto:charles.scharlau at gmail.com
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Tue, 03 Jan 2012 13:33:07 +1100
> From: Tony Langdon <vk3jed at gmail.com>
> Subject: Re: [ARDF] Looking ahead to ARDF apps (in 2012)
> To: Charles Scharlau <charles.scharlau at gmail.com>,ardf at kkn.net
> Message-ID: <4f0268ec.059dec0a.2cbd.ffffb802 at mx.google.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> At 09:37 AM 1/3/2012, Charles Scharlau wrote:
> 
>> 7. M&C provides an audio tone indication of how accurately your mobile
>> device is pointed at a control. If you point your iPhone toward a control,
>> the volume of the audio tone increases, and as you point your iPhone away
>> from the control the audio tone volume decreases. Think of it as an "audio
>> compass" that steers you always in the direction of your target control.
> 
> Any chance of a "whoopee mode"?  i.e. where the frequency of the 
> audio tone varies, rather than the volume.  Not sure if that'd break 
> the processor budget or not.  You might also need to check what the 
> battery life is, I suspect this app will drain a device's battery 
> rather quickly. :)
> 
> 73 de VK3JED / VK3IRL
> http://vkradio.com
> 
> 
> 
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> End of ARDF Digest, Vol 101, Issue 3
> ************************************