Nonofficial real-time tracking support
Terms of Service
"sendGPS" provided on this web site is protected by copyright owned by the webtracker.hk . No express or implied warranty is given to the accuracy or completeness of the information or its appropriateness for use in any particular circumstances. Webtracker.hk is not responsible for any loss or damages whatsoever arising from any cause whatsoever in usage of the software or with this web site. |
During the Oxfam Trailwalker 2007, 7 teams of walkers used sendGPS to send their real-time positions to www.webtracker.hk and shown in the following web page.
http://www.webtracker.hk/webtracks/trailwalker2007.php
The tracking of the walkers is quite interesting but we want to do more functions in 2008. This year, we extended the functions of sendGPS and www.webtracker.hk . To make them best fit for support teams and walkers.
Highlights of the extended functions:
1 |
Support various devices and operation system ( Nokia, Sony Ericsson , Blackberry and Pocket PC with Windows Mobile) |
2 |
Enquiry of walker's positions via SMS or GPRS |
3 |
Show positions in the nearest Distance Post (標距柱). You can check walker's positions in paper maps. You don't need to access Internet. |
How it works:
Once you have installed sendGPS for J2ME to your mobile phones, you can send your positions to www.webtracker.hk via GPRS or to yours support team mobile phones via SMS automatically or manually. Your support team can also enquiry your positions via GPRS or SMS.
You can download the sendGPS from http://wap.webtracker.hk
From the above map, it shows the distance posts of the Maclehose Trail from M024 to M030. The red circles are the distance post zone. When you enter the zone, sendGPS will show your current distance post within the circle. You can adjust the radius of the red circle in the setup of sendGPS , go to “Distance Post Radius”. The default value is set to 50m.
sendGPS will also automatically calculate your time left to the nearest check point. It calculates your current position and sum all the distances of the distance posts to the nearest check point.
sendGPS main screen
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Request walker's positions
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Tips for walkers:
1. Install sendGPS for J2ME in your mobile phones.
2. Start sendGPS , go to "setup", input your Username and Password.(The Username and Password must be registered at http://www.webtracker.hk )
3. Select Events:
a. None
b. Test (for development only)
c. Oxfam Trailwalker 2008
d. Raleigh challenge 2008 |
If you select wrong event, it is not possible to show your correct Distance Post.
4. Enter SMS phone no. if you want to sending the position messages to support team's mobile phone.
3. Select running Mode , Transfer Rate and Location providers
Mode:
a. Offline , do not send any message to server or support team
b. Online - HTTP , send position data to www.webtracker.hk via GPRS
c. Online - SMS , send position data to support team's mobile phone |
Location:
a. Bluetooth , for connection with bluetooth GPS receiver
e.g. BT GPS: btspp://001BC100F64F:1
b. Internal , for connection with Internal GPS
c. Serial , for connection with bluetooth GPS receiver or Internal GPS in pocket PC with Windows Mobile only
e.g. COM: socket:127.0.0.1:20175
d. Stimulator , playback from a NMEA file |
Tips for support teams:
1. Install sendGPS for J2ME in your mobile phones. You don't need to connect to GPS receiver.
2. Print the maps with distance posts.
3. Start sendGPS , select request position, input the User Name, Password and mobile phone for one of your walker. (The User Name and Password must be registered at http://www.webtracker.hk )
4. To request walker's position, you can select the following request methods:
a. Request via SMS - The walker's mobile phone will response the current position.
b. Request via HTTP, - The server www.webtracker.hk will reply the requested walker's positions. |
After receiving the walker's message . e.g.
Latitude: 22.33061
Longitude: 114.18495
Fix: 3D
Date: 2007-12-26 21:27:41
Distance Post: 2
0:1:43 left to CP1 with distance 261m
Send from webtracker.hk |
You can check the walker's positions through the Distance Posts which are marked on the maps .
Either method has its advantage and disadvantage:
Methods |
Advantage |
Disadvantage |
SMS |
No need of server which act as proxy for replying walkers‘s positions. Walker 's mobile phone directly reply position message to support team. |
The security setting of most mobile phones will not allow automatically sending SMS. Walkers have to manually reply position message to support team. |
HTTP |
Most security setting of mobile phone will just asking once for using the HTTP service. |
Walkers must keep to sending updated position data to server and the server will act as proxy to reply their current positions to support team. Walker can set timer in sendGPS for automatically sending position data. |
Tested devices:
Nokia N73, Nokia N82, HTC Touch, Blackberry 8707g
Events:
A. Oxfam Trailwalker 2008 - Maclehose Trail
Check Points:
The route of the Oxfam Trailwalker is based on the Maclehose Trail, there are 10 check points along the route.
The following data is what I got from the year I worked as a volunteer during Oxfam Trailwalker few years ago. I will update the data once I have the updated information.
|
Check Points |
Name |
Cooridinates |
|
|
|
Distance
Posts |
MGRUTM |
DD.MM
(Latitude, Longitude) |
1 |
Start Point |
Pak Tam Chung
北潭涌 |
M001 |
KK248 792 |
22.39684245,114.3270620 |
2 |
1 |
Sai Wan
西灣 |
M031 |
KK293 792 |
22.39755893,114.3707338 |
3 |
2 |
Pak Tam Au
北潭坳 |
M049 |
KK253 819 |
22.42128817,114.3314489 |
4 |
3 |
Kei Ling Ha
企嶺下 |
M064 |
KK199 800 |
22.40326801,114.2793701 |
5 |
4 |
Gilwell Campsite
基維爾營 |
M093 |
KK144 758 |
22.36441169,114.2238372 |
6 |
5 |
Beacon Hill
畢架山 |
M109 |
KK085 743 |
22.34993559,114.1697837 |
7 |
6 |
Smugglers Ridge Rifle Range
走私坳警察射擊場 |
M120 |
KK066 761 |
22.36585357,114.1510232 |
8 |
7 |
Lead Mine Pass
鉛礦坳 |
M137 |
KK075 813 |
22.41292661,114.1588006 |
9 |
8 |
Tai Mo Shan
大帽山 |
M155 |
KK023 806 |
22.40571512,114.1084700 |
10 |
9 |
Tai Lam Chung Reservoir
大欖涌水塘 |
M175 |
JK956 795 |
22.39461398,114.0436694 |
11 |
Finish Point |
Perowne Barracks
屯門掃管笏寶隆軍營 |
M194 |
HE089 778 |
22.37646812,113.9919090 |
Distance Posts:
In average, the distance between every two distance posts is 500m.
http://www.afcd.gov.hk/english/country/cou_wha/files/distance_post_maclehose_trail.pdf
B. Raleigh Challenge 2008 - Wilson Trail
Check points
The route of the Raleigh Challenge is based on the Wilson Trail . But I still don't have the information of the check points in the Raleigh Challenge 2008. Once I have the data, I will update in both the sendGPS and this page.
Distance Posts:
http://www.afcd.gov.hk/english/country/cou_wha/files/DP_Wilson_trail.pdf
Reference:
Oxfam Trailwalker
http://www.oxfamtrailwalker.org.hk/
Raleigh Challenge - Wilson Trail
http://www.wilsontrail.org/
Distance Posts for various hiking trails
(Agriculture, Fisheries and Conversion Department)
http://www.afcd.gov.hk/english/country/cou_wha/cou_wha_dis.html
Distance posts and Mobile Coverage of Hiking Trails
(Office of the Telecommunications Authority)
http://www.ofta.gov.hk/en/ca_bd/country_map/main.html
http://www.ofta.gov.hk/en/ca_bd/Coverage-in-country-park-main.html
http://www.ofta.gov.hk/en/ca_bd/country_park.html
Please download (Right click -> Save Link as) and print the maps to locate the distance posts with mobile coverage
a . MacLehose Trail
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S1.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S2.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S3.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S4.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S5.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S6.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S7.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S8.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S9.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-MT-S10.pdf
b . Wilson Trail
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S1.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S2.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S3.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S4.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S5.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S6.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S7.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S8.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S9.pdf
http://www.ofta.gov.hk/en/ca_bd/country_map/OFTA-WT-S10.pdf
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