to:
      
Changed line 47 from:

<h2>Roll</h2>

to:

Roll

Changed line 49 from:

<strong><em>Above: Roll output (SPEEDBOX-INS Tactical Dual Antenna system compared to reference system)</em></strong>

to:

Above: Roll output (SPEEDBOX-INS Tactical Dual Antenna system compared to reference system)

Changed line 55 from:

<strong><em>Above: Roll output (SPEEDBOX-INS Tactical Single Antenna system compared to reference system)</em></strong>

to:

Above: Roll output (SPEEDBOX-INS Tactical Single Antenna system compared to reference system)

Changed line 61 from:

<strong><em>Above: Roll output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)</em></strong>

to:

Above: Roll output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)

Changed line 66 from:

<h2>Pitch</h2>

to:

Pitch

Changed line 68 from:

<strong><em>Above: Pitch output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)</em></strong>

to:

Above: Pitch output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)

Changed line 74 from:

<strong><em>Above: Pitch output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)</em></strong>

to:

Above: Pitch output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)

Changed line 80 from:

<strong><em>Above: Pitch output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)</em></strong>

to:

Above: Pitch output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)

Changed line 85 from:

<h2>Yaw</h2>

to:

Yaw

Changed line 87 from:

<strong><em>Above: Yaw output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)</em></strong>

to:

Above: Yaw output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)

Changed line 93 from:

<strong><em>Above: Yaw output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)</em></strong>

to:

Above: Yaw output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)

Changed line 99 from:

<strong><em>Above: Yaw output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)</em></strong>

to:

Above: Yaw output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)

Changed line 104 from:

<h2>Error Distribution</h2>

to:

Error Distribution

Changed line 108 from:

<strong><em>Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Tactical and the reference system</em></strong>

to:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Tactical and the reference system

Changed line 114 from:

<strong><em>Above: Distribution of difference in measurements between the SPEEDBOX-INS Single Tactical and the reference system</em></strong>

to:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Single Tactical and the reference system

Changed line 120 from:

<strong><em>Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Standard and the reference system</em></strong>

to:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Standard and the reference system

Restore
November 20, 2013, at 10:04 AM by racetec -
Added lines 1-120:

<body> <h2>Attitude accuracy (INS option only)</h2>


<h3><strong>SPEEDBOX-INS Attitude Accuracy Test</strong></h3>

In order to test the accuracy of our SPEEDBOX INS attitude measurements (roll, pitch and yaw) the units were tested against a navigation grade RLG IMU with two military GPS receivers providing both standard GPS and GPS compass information. Additionally the reference system GPS solution was post processed with corrections gathered at a reference station, resulting in a cm-level accuracy GPS solution aiding the tactical-grade IMU. The complete reference system cost in excess of $500K.

The reference system is permanently and accurately installed in the testing vehicle for optimum measurement precision. The SPEEDBOX-INS systems were additionally fitted to the vehicle ready for testing and data collection.


    <strong>Open-sky high dynamics test</strong> 

High dynamics tests were performed in open-sky conditions (good GPS conditions). These conditions would be applicable to many tests for which the system is intended; including stability testing, slip angle measurement and vehicle dynamics development. In a large open and clear area figure of eights were driven at a demanding pace. This test was repeated multiple times.


The headline 1-sigma comparison figures for both the standard SPEEDBOX-INS and the tactical grade SPEEDBOX-INS versus the reference system during this test are shown below:

      Call me back | My basket | Checkout | Add to email list

     You are here: Website » Knowledge base

Deleted line 32:
Deleted line 35:
Deleted line 38:
Deleted lines 41-42:
Added line 49:
Deleted lines 54-55:


    
Changed line 64 from:
    
to:
Changed line 74 from:
    
to:
Changed line 85 from:
    
to:
Changed line 95 from:
    
to:
Changed line 105 from:
    
to:
Changed line 116 from:
    
to:
Changed line 126 from:
    
to:
Changed line 136 from:
    
to:
Changed line 152 from:
    
to:
Changed line 162 from:
    
to:
November 20, 2013, at 10:22 AM by racetec -
Deleted line 0:

<body>

Changed lines 2-3 from:


to:
Changed lines 5-7 from:

In order to test the accuracy of our SPEEDBOX INS attitude measurements (roll, pitch and yaw) the units were tested against a navigation grade RLG IMU with two military GPS receivers providing both standard GPS and GPS compass information. Additionally the reference system GPS solution was post processed with corrections gathered at a reference station, resulting in a cm-level accuracy GPS solution aiding the tactical-grade IMU. The complete reference system cost in excess of $500K.

The reference system is permanently and accurately installed in the testing vehicle for optimum measurement precision. The SPEEDBOX-INS systems were additionally fitted to the vehicle ready for testing and data collection.

to:

In order to test the accuracy of our SPEEDBOX INS attitude measurements (roll, pitch and yaw) the units were tested against a navigation grade RLG IMU with two military GPS receivers providing both standard GPS and GPS compass information. Additionally the reference system GPS solution was post processed with corrections gathered at a reference station, resulting in a cm-level accuracy GPS solution aiding the tactical-grade IMU. The complete reference system cost in excess of $500K.

The reference system is permanently and accurately installed in the testing vehicle for optimum measurement precision. The SPEEDBOX-INS systems were additionally fitted to the vehicle ready for testing and data collection. (:div:)

(:divend:)

Changed lines 14-15 from:


to:
Changed lines 18-19 from:

High dynamics tests were performed in open-sky conditions (good GPS conditions). These conditions would be applicable to many tests for which the system is intended; including stability testing, slip angle measurement and vehicle dynamics development. In a large open and clear area figure of eights were driven at a demanding pace. This test was repeated multiple times.

to:

High dynamics tests were performed in open-sky conditions (good GPS conditions). These conditions would be applicable to many tests for which the system is intended; including stability testing, slip angle measurement and vehicle dynamics development. In a large open and clear area figure of eights were driven at a demanding pace. This test was repeated multiple times. (:div:)

(:divend:)

Changed lines 23-27 from:


The headline 1-sigma comparison figures for both the standard SPEEDBOX-INS and the tactical grade SPEEDBOX-INS versus the reference system during this test are shown below:

« back to website

MeasurementAccuracy / AttitudeAccuracy-INSOptionOnly

MeasurementAccuracy.AttitudeAccuracy-INSOptionOnly History

Hide minor edits - Show changes to markup

November 20, 2013, at 10:25 AM by racetec -
Deleted line 29:
  
to:


The headline 1-sigma comparison figures for both the standard SPEEDBOX-INS and the tactical grade SPEEDBOX-INS versus the reference system during this test are shown below: (:div:)

(:divend:) (:table border="1":)

Changed lines 31-54 from:
    
<strong>Standard</strong> Dual Antenna <strong>SPEEDBOX-INS</strong> System <strong>Tactical</strong> Dual/Single Antenna <strong>SPEEDBOX-INS</strong> System
Roll 0.1 0.04
Pitch 0.1 0.04
Yaw 0.15 0.08

Representative yaw, pitch and roll output from the standard SPEEDBOX-INS is shown below compared to the reference solution.

to:

(:cellnr:) (:cell align="middle":)Standard Dual Antenna SPEEDBOX-INS System (:cell align="middle":)Tactical Dual/Single Antenna SPEEDBOX-INS System

(:cellnr align="middle":)Roll (:cell align="middle":)0.1 (:cell align="middle":)0.04

(:cellnr align="middle":)Pitch (:cell align="middle":)0.1 (:cell align="middle":)0.04

(:cellnr align="middle":)Yaw (:cell align="middle":)0.15 (:cell align="middle":)0.08

(:tableend:)

Representative yaw, pitch and roll output from the standard SPEEDBOX-INS is shown below compared to the reference solution. (:div:)

(:divend:)

Changed lines 56-60 from:

Above: Roll output (SPEEDBOX-INS Tactical Dual Antenna system compared to reference system)


    

to:

Above: Roll output (SPEEDBOX-INS Tactical Dual Antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 66-70 from:

Above: Roll output (SPEEDBOX-INS Tactical Single Antenna system compared to reference system)


    

to:

Above: Roll output (SPEEDBOX-INS Tactical Single Antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 76-80 from:

Above: Roll output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)


    

to:

Above: Roll output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 87-91 from:

Above: Pitch output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)


    

to:

Above: Pitch output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 97-101 from:

Above: Pitch output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)


    

to:

Above: Pitch output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 107-111 from:

Above: Pitch output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)


    

to:

Above: Pitch output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 118-122 from:

Above: Yaw output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)


    

to:

Above: Yaw output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 128-132 from:

Above: Yaw output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)


    

to:

Above: Yaw output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 138-142 from:

Above: Yaw output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)


    

to:

Above: Yaw output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)


    

(:div:)

(:divend:)

Changed lines 148-149 from:

Please note that the pitch and roll measurements are calculated in exactly the same way, and as such we would expect to see very similar error distributions for both measurements. However as can be seen below the pitch appears to significantly more accurate than the roll measurement, resulting in a double peak distribution. The reason for this is that the reference system and our SPEEDBOX-INS systems are mounted at different locations on the test vehicle. As the test vehicle was driven in a figure of 8 pattern, the forces enacting on vehicle are twisting it one way, then the other; and due to this the 2 systems saw slightly different roll angles. On the pitch axis the vehicle is much stiffer and you cannot see the same effect.

to:

Please note that the pitch and roll measurements are calculated in exactly the same way, and as such we would expect to see very similar error distributions for both measurements. However as can be seen below the pitch appears to significantly more accurate than the roll measurement, resulting in a double peak distribution. The reason for this is that the reference system and our SPEEDBOX-INS systems are mounted at different locations on the test vehicle. As the test vehicle was driven in a figure of 8 pattern, the forces enacting on vehicle are twisting it one way, then the other; and due to this the 2 systems saw slightly different roll angles. On the pitch axis the vehicle is much stiffer and you cannot see the same effect. (:div:)

(:divend:)

Changed lines 154-158 from:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Tactical and the reference system


    

to:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Tactical and the reference system


    

(:div:)

(:divend:)

Changed lines 164-168 from:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Single Tactical and the reference system


    

to:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Single Tactical and the reference system


    

(:div:)

(:divend:)

Changed lines 174-176 from:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Standard and the reference system

</body> </html>

to:

Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Standard and the reference system

November 20, 2013, at 10:19 AM by racetec -
Changed line 2 from:

<h2>Attitude accuracy (INS option only)</h2>

to:

Attitude accuracy (INS option only)

Changed line 5 from:

<h3><strong>SPEEDBOX-INS Attitude Accuracy Test</strong></h3>

to:

SPEEDBOX-INS Attitude Accuracy Test

Changed lines 11-13 from:
    <strong>Open-sky high dynamics test</strong> 

to:

Open-sky high dynamics test

Changed line 24 from:
      
  
<strong>Standard</strong> Dual Antenna <strong>SPEEDBOX-INS</strong> System <strong>Tactical</strong> Dual/Single Antenna <strong>SPEEDBOX-INS</strong> System
Roll 0.1 0.04
Pitch 0.1 0.04
Yaw 0.15 0.08

Representative yaw, pitch and roll output from the standard SPEEDBOX-INS is shown below compared to the reference solution.

<h2>Roll</h2>

<strong><em>Above: Roll output (SPEEDBOX-INS Tactical Dual Antenna system compared to reference system)</em></strong>


    

<strong><em>Above: Roll output (SPEEDBOX-INS Tactical Single Antenna system compared to reference system)</em></strong>


    

<strong><em>Above: Roll output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)</em></strong>


    

<h2>Pitch</h2>

<strong><em>Above: Pitch output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)</em></strong>


    

<strong><em>Above: Pitch output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)</em></strong>


    

<strong><em>Above: Pitch output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)</em></strong>


    

<h2>Yaw</h2>

<strong><em>Above: Yaw output (SPEEDBOX-INS Tactical Dual antenna system compared to reference system)</em></strong>


    

<strong><em>Above: Yaw output (SPEEDBOX-INS Tactical Single antenna system compared to reference system)</em></strong>


    

<strong><em>Above: Yaw output (SPEEDBOX-INS Standard Dual antenna system compared to reference system)</em></strong>


    

<h2>Error Distribution</h2>

Please note that the pitch and roll measurements are calculated in exactly the same way, and as such we would expect to see very similar error distributions for both measurements. However as can be seen below the pitch appears to significantly more accurate than the roll measurement, resulting in a double peak distribution. The reason for this is that the reference system and our SPEEDBOX-INS systems are mounted at different locations on the test vehicle. As the test vehicle was driven in a figure of 8 pattern, the forces enacting on vehicle are twisting it one way, then the other; and due to this the 2 systems saw slightly different roll angles. On the pitch axis the vehicle is much stiffer and you cannot see the same effect.

<strong><em>Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Tactical and the reference system</em></strong>


    

<strong><em>Above: Distribution of difference in measurements between the SPEEDBOX-INS Single Tactical and the reference system</em></strong>


    

<strong><em>Above: Distribution of difference in measurements between the SPEEDBOX-INS Dual Standard and the reference system</em></strong>

</body> </html>

Restore
Edit - History - Print - Download (.HTML) - PDF - Search
Page last modified on November 20, 2013, at 10:25 AM