Oliver Huang
  • Male
  • Hsinchu
  • Taiwan
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  • Fahad Jahangir
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  • Quadzimodo
  • Nikola Rabchevsky
  • Andrew Tridgell
  • Michael Oborne
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Oliver Huang's Page

Latest Activity

Oliver Huang commented on Oliver Huang's blog post New Level of Performance with Single Frequency RTK Receiver
"Performance of small antennas could vary greatly. It's best for the antenna vendors to show how good their small antennas are compared to survey antennas. SkyTraq could only work on the receiver side to bring state of art performance.…"
Jul 31
Nikola Rabchevsky commented on Oliver Huang's blog post New Level of Performance with Single Frequency RTK Receiver
"How well does this work with small antennas you are likely to use on a UAV?"
Jul 31
Oliver Huang posted blog posts
Jul 29
Oliver Huang commented on Oliver Huang's blog post RTK DGPS GPS Comparison
"Any one doing interpolation from end points will get a straight line. Nope, it's walking the rounds collecting receiver result every second."
Jan 27
Fahad Jahangir commented on Oliver Huang's blog post RTK DGPS GPS Comparison
" Did you collect these line continuously from one end to another as a line feature or you just took two end points and interpolated the lines? "
Jan 27
DRONORTE commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"Ok, have just make our first test. Everything seems to work fine with latest firmware, got float RTK solution in less than a minute (unfortunately, didn't get Fix ten minutes later). BUT working with NSHP in ROVER-FLOAT MODE instead of…"
Jun 30, 2016
Oliver Huang commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"There are some earlier discussions on how to trigger camera with…"
Jun 24, 2016
Arnaldo Santos commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"Any news? I would like to use this for mapping, is there a way to sync with a sony camera?"
Jun 23, 2016
Oliver Huang replied to Sha Zhou's discussion Low Cost, High Performance RTK Module from Tersus
"For aerial mapping, using time tag to derive position may be questionable. If UAV is flying at 50Km/hr, even at 10Hz raw measurement update rate, it’s 139cm between two 10Hz locations. Unless UAV is flying straight at constant velocity,…"
Jun 2, 2016
Oliver Huang replied to Sha Zhou's discussion Low Cost, High Performance RTK Module from Tersus
"The system claims that by storing measurements at time of camera trigger signal and post process to get the exact position, there is no need of radio link for sending base station data to the rover on the mapping UAV; it avoids potential RTK…"
Jun 2, 2016
DRONORTE commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"We have just received 2 units (base-station) plus interesting freebies: a micro uart-to-usb dongle wich I think could be embedded in the gps shield, and a fancy minimal gps development board, size of a nail LOL. Really interesting units and very…"
Feb 11, 2016
DRONORTE commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"Dear Oliver, have just ordered two of your 5hz units for testing. Do you have NTRIP communications documented? (just asking, not needed by now) Thanks."
Jan 29, 2016
Oliver Huang commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"Raw measurement output is in SkyTraq binary format: http://navspark.mybigcommerce.com/content/AN0030_1.4.31.pdf"
Jan 15, 2016
Mathias commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"Hello, could you tell me what the output format of the raw measurements is? Is it the proprietary Skytraq raw or RTCM 3.x format? If it is the Skytraq format, is there a protocol definition somewhere that might facilitate translation to RTCM 3.x?…"
Jan 15, 2016
Oliver Huang commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"We don't see higher update rate any better than lower update rate. It should mainly be dictated by application requirement. Arducopter code default requires 5Hz GPS, thus using 1Hz RTK the behavior appears to be a bit strange, jerking…"
Jan 7, 2016
DRONORTE commented on Oliver Huang's blog post RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5
"Dear Oliver we are going to try your NS-HP series (next month) problem is -as every new development- the absolute lack of information out there. Some questions here: Performance in 10Hz unit is noticeable over 5Hz units? True plug and play following…"
Jan 7, 2016

Profile Information

Please tell us a bit about your UAV interest
Interested in UAV related technology and its applications.
Hometown:
Hsinchu

Oliver Huang's Blog

New Level of Performance with Single Frequency RTK Receiver

Posted on July 28, 2017 at 9:30am 2 Comments

With enough satellite signals, single frequency RTK receiver works well under open sky environment. Of available ones on the market, we have yet to see one that works well in environment with surrounding trees and buildings. The above video shows a new level of performance with our soon to be released update firmware enabling to work under…

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RTK Loiter / RTL Testing with AC 3.2.1 and NS-HP-5

Posted on December 27, 2015 at 10:15am 31 Comments

Holidays Greetings!

There is much interest in seeing demo of our $50 pre-order NS-HP RTK receiver on a quadcopter, so we tested last week on a less windy day (with up to 4.5mph wind). A compass module and 5Hz version of NS-HP RTK receiver replaced the original GPS and compass inside the 3DR Iris. These two videos show the result we obtained with…

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Affordable RTK Capable GPS Receiver

Posted on November 24, 2015 at 7:30am 0 Comments

We are pleased to announce availability of NS-HP, a $50 RTK-capable high performance GPS receiver. At 2 / 4 / 5 / 8 / 10 / 20 / 25 / 40 / 50 Hz update rate, NS-HP is a high-performance GPS receiver suitable for traditional GPS applications. At 1Hz update rate, NS-HP can accept RTCM 3.x message type 1002, 1004, 1005, and 1006, or SkyTraq raw measurement data from a base station to perform carrier phase RTK processing, achieving centimeter-level accuracy relative…

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Early Dynamic Test Result of Single-Frequency RTK

Posted on August 22, 2015 at 6:25pm 9 Comments

Antenna: Harxon HX-CSX601A

Receiver: SkyTraq GPS/BD RTK receiver

Baseline: 1.7Km

Max Speed: 81.2Km/hr

Blue point: single solution

Yellow point: float solution

Green point: fixed solution

RTK is well known for land survey and automated precision farming applications,…

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