Editing SAR Fundamentals/Navigation instruments theory
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Current revision | Your text | ||
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determine location when at | determine location when at | ||
<table border="1"> | <table border="1"> | ||
- | <tr><th> | + | <tr><th>Scenario</th><th>GPS</th><th>Compass</th><th>Altimeter</th></tr> |
+ | <tr><th>determine location when at ...</th></tr> | ||
<tr><td>hill top</td><td>+ </td><td>triangulate</td><td>helps</td></tr> | <tr><td>hill top</td><td>+ </td><td>triangulate</td><td>helps</td></tr> | ||
<tr><td>valley bottom</td><td>depends on tightness</td><td>triangulate</td><td>-</td></tr> | <tr><td>valley bottom</td><td>depends on tightness</td><td>triangulate</td><td>-</td></tr> | ||
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<tr><td>heavy fog</td><td>+</td><td>-</td><td>helps</td></tr> | <tr><td>heavy fog</td><td>+</td><td>-</td><td>helps</td></tr> | ||
<tr><td>blizzard</td><td>+</td><td>-</td><td>pressure change?</td></tr> | <tr><td>blizzard</td><td>+</td><td>-</td><td>pressure change?</td></tr> | ||
- | <tr><th> | + | <tr><th>Scenario</th><th>GPS</th><th>Compass</th><th>Altimeter</th></tr> |
+ | <tr><th>determine direction/distance to ...</th></tr> | ||
<tr><td>known UTM</td><td>+</td><td>direction only</td><td>elevation change</td></tr> | <tr><td>known UTM</td><td>+</td><td>direction only</td><td>elevation change</td></tr> | ||
<tr><td>some place you can see</td><td>not helpful or only poor with magnetic sensor</td><td>direction only</td><td>-</td></tr> | <tr><td>some place you can see</td><td>not helpful or only poor with magnetic sensor</td><td>direction only</td><td>-</td></tr> | ||
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<tr><td>a Lat/Long</td><td>sufficient</td><td>-</td><td>elevation change</td></tr> | <tr><td>a Lat/Long</td><td>sufficient</td><td>-</td><td>elevation change</td></tr> | ||
<tr><td>a street address</td><td>for street GPS</td><td>-</td><td>-</td></tr> | <tr><td>a street address</td><td>for street GPS</td><td>-</td><td>-</td></tr> | ||
- | <tr><th>other purposes | + | <tr><th>other purposes</th><tr> |
<tr><td>route selection</td><td>poor unless street</td><td>-</td><td>-</td></tr> | <tr><td>route selection</td><td>poor unless street</td><td>-</td><td>-</td></tr> | ||
<tr><td>remembering a UTM</td><td>+</td><td>-</td><td>-</td></tr> | <tr><td>remembering a UTM</td><td>+</td><td>-</td><td>-</td></tr> | ||
- | |||
</table> | </table> | ||