# Overview
Predict is a partial PHP port of the [Gpredict](http://gpredict.oz9aec.net/) program
that allows real-time tracking and orbit prediction of satellites from two line
element sets. It supports the SGP4 and SDP4 [models](http://en.wikipedia.org/wiki/Simplified_perturbations_models) for prediction.
# Installation
Just clone this repo and try out the tests and examples from the root of the checkout.
# Examples/Tests
The tests directory includes a port of the original sgpsdp test files from
Gpredict. They are pretty close.
Included in the examples directory is a sample iss.tle (with an update script, which you
should run first). There are two examples, the visible_passes.php script and the benchmark.php
script. The former is for generating visible pass predictions of the ISS, and its output is
similar to what you might get from the Heavens-Above website, and it is heavily commented.
The latter just does predictions for benchmarking with xhprof.
You can see an image of a Predict/Google Maps API mash-up I did for fun:
![Google Maps Mashup](https://raw.github.com/shupp/Predict/master/examples/google_maps_iss.png)
You can also see an example visible pass plotted from the polar view of the observer:
![Google Maps Mashup](https://raw.github.com/shupp/Predict/master/examples/pass_polar_plot.png)
# About this port
This port largely maintains the style and organization of the original C code, but
scopes methods into classes rather than leaving everything in the global scope.
The motivation for this is so that changes upstream can more easily be integrated over
time. Only the prediction routines have been ported.
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用于实时卫星跟踪和轨道预测的Gpredict程序的部.zip
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用于实时卫星跟踪和轨道预测的Gpredict程序的部.zip (59个子文件)
Predict-master
composer.json 366B
Predict.php 31KB
tests
test-001.tle 157B
test-002.tle 158B
test-001.php 3KB
test-002.php 3KB
Table.php 26KB
package.xml 5KB
examples
solar_position.php 1KB
pass_polar_plot.png 27KB
benchmark.php 2KB
visible_passes.php 3KB
google_maps_iss.png 383KB
findsun.php 687B
update_iss_tle.php 517B
iss.tle 153B
generatePackage.php 2KB
Predict
QTH.php 618B
Pass.php 745B
Exception.php 53B
SGSDPStatic.php 651B
Vector.php 207B
Sat.php 12KB
PassDetail.php 994B
Geodetic.php 222B
TLE.php 8KB
SGPObs.php 7KB
SGPSDP.php 53KB
Time.php 7KB
ObsSet.php 293B
DeepArg.php 652B
Math.php 5KB
DeepStatic.php 1KB
Solar.php 4KB
xhprof_lib
EC
XHProf.php 4KB
typeahead.php 1KB
js
xhprof_report.js 6KB
utils
xhprof_lib.php 26KB
callgraph_utils.php 17KB
xhprof_runs.php 5KB
docs
sample-diff-report-parent-child-view.jpg 238KB
sample-flat-view.jpg 268KB
sample-diff-report-flat-view.jpg 290KB
index.html 25KB
sample-parent-child-view.jpg 138KB
sample-callgraph-image.jpg 146KB
list.php 878B
css
xhprof.css 2KB
index.php 3KB
display
xhprof.php 44KB
typeahead_common.php 2KB
callgraph.php 3KB
jquery
indicator.gif 2KB
jquery-1.2.6.js 98KB
jquery.tooltip.css 533B
jquery.tooltip.js 8KB
jquery.autocomplete.js 19KB
jquery.autocomplete.css 1KB
README.md 2KB
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