Naval Space Surveillance RADAR (NAVSPASUR)

E-mail: jay(at)salsburg(dot)com

Meteors 11-19-2012 - Click to hear

Leonid Meteors 11/19/2012, boring parts removed. This is compressed from a 12 hour recording. Notice the many overdense returns lasting more than 30 seconds. These long lasting returns occured from around 5:00 AM to 9:00 AM CST.

Leonid Meteors 11/19/2012

Detail Proceedure for constructing the near-perfect Space RADAR Dipole Antenna Element.

Detection of Over-the-Horizon Thunderstorm Activity with the Naval Space Surveillance RADAR.

2012 Report of Aquariid peak Meteor Activity from NAVSPASUR Space RADAR

This morning 08/11/2012 was busy with the rare Chime-like Reports from my NAVSPASUR Receiver. The boring parts have been removed.

08-11-2012 Meteors - Click to hear

This is the Temporal envelope of the above recording.

08-11-2012 Meteors

All my effort to build and install an Observatory to receive and record Meteor Forward Scatter RADAR from the NAVSPASUR site in Texas was rewarded this morning (08/05/2012) with these Recordings and Images. There was nothing visible in the night sky, the bright moon and overcast obscured any sightings. Also, some of the best RADAR returns were after sunrise.

08-05-2012 Meteors - Click to hear

This image is the temporal envelope of this recording. I removed the boring parts. The original recording is 5 hours long.

Meteor Timeline 08/05/2012

This is a composite screen shot of the interesting parts of this morning's (08/05/2012) recordings. Notice the time signatures in each panel. This level of activity is very rare.

Meteros 08/05/2012

Meteor Activity Recording. There were many large meteor Ion trails picked up by my NAVSPASUR receiver on the night of Feb. 02, 2012. There is a Satellite in the recording, for really strange sounds, this recording is a hit. I removed the boring parts. In the recordings on this page, my receiver is tuned to 216.979 MHz with CW demodulation. NAVSPASUR transmits at 216.89 MHz. By tuning below the RADAR's frequency by approximately 1000 Hz, my receiver places reflections from the RADAR Transmitter near 1000 Hz audio, therefore making the reflections easily audible. Significant experimentation has determined this as the ideal technique for detecting Meteors and Solar Activity in the upper atmosphere.

03-02-2012 Meteors - Click to hear

The morning of 06/11/2012 was very busy. Between 6:52 and 6:53 AM, some interesting activity can be heard in this recording of the near Earth Atmosphere.Seen in the screen shot below, the long-duration meteor recorded at the beginning of the audio immediately below, is seen closely folowed by another small meter. The bright horizontal lines are returns from Solar debris striking the upper atmosphere, reflecting the Space RADAR at low speed, like a giant Mirror.

06-11-2012 Meteors - Click to hear

Meteors 06/11/2012

The sky was full of lightning. This screen shot of my Space RADAR receiver shows:

  • 1. Lightning strikes, the vertical hash marks, the weaker ones are over 50 miles away.
  • 2. Near Earth Orbit objects, the bright specks with subtle angular orientation.
  • 3. Multi-frequency Reflections caused by Solar Mass Ejection in upper Atmosphere, the intermittent horizontal line at about 1150 Hz.
  • 4. A meteor, the bright vertical trace on the right.
  • The Geomagnetic storms were very intense the few days before and after the date of this graphic, many experienced intermittent Pager and Cell phone Service during this Solar Storm.

    Solar Storm

    Strong Solar Impact. On the morning of 05/26/2012, my Space RADAR Receiver picked up strong reflections from Solar debris striking the upper atmosphere. I used HTML to compress this image vertically to 33% of its original scale. Notice the strong horizontal trace. By offsetting the Receiver's CW frequency to 216.978 MHz or approximately 2 KHz below the Carrier, reflections from the NAVSPASUR transmission at 216.98 MHz displays near the center of the trace. Notice on the amplitude window on the right side, this screen snapshot records the instantaneous amplitude at more the 10 db (times 10 to 100) above the noise floor. The last time the reflection was this strong was last March, there was a Solar Storm that morning which interrupted Pager and Cellular Phone service. This strong reflection does not seem to be coincident with a Solar Storm but it is coincident with a Strong Aurora.

    Strong Solar Impact

    05-26-2012 Solar - Click to hear

    Edited 15 second recording of peak Aurora reflection, starting 05/26/2012:04:00 along with Meteors occuring in the 45 minute timespan of the recording, time compressed to remove the boring parts.

    Polar Pass Plot, 05/26/2012:04:08 Local Time Polar Pass Plot, 05/26/2012:13:09 Local Time

    The image on the left is a Polar Pass Plot, 05/26/2012:04:08 Local Time (-5UTC) from NOAA POES satellite. It shows strong Auroras a few minutes before the trace from my Receiver was recorded above. Notice the elliptical shape of the Aurora dipping down toward the Continental US. The Red color in the first Pass Plot indicates maximum measured intensity, or 10 ergs times cm squared. In contrast to the right, a Pass Plot taken later that mid day, notice the stark decreases in intensity. The red arrow in the Pass Plots point to the noon meridian at the time the measurement was taken.

    On the morning of April 15, 2012, 8:30 AM, I recorded these images and audio of a Meteor event with my Space RADAR System. It lasted only a few minutes but was remarkable. This is caused by over-the-horizon Thunderstorm Lightning. The audio is unprocessed, listen closely for frequent ringing sounds.

    Meteor Storm

    HDSDR_20120415_133315Z_0kHz_AF - Click to hear

    This is an edited recording and spectrogram of some usual and unusual events recently recorded in my NAVSPASUR receiver. The first 2 events are small meteor bursts. The third a Near Earth Satellite. The fourth a Meteor with ionization trailing. In the spectrogram you can see the Meteors' Ion trails reflect at near the same Zero velocity, that horizontal line at about 1200 Hz. This is the Meteor’s Terminal Velocity as it turns into plasma in the upper atmosphere, its ionization trail reflecting the Space RADAR beam into my Antenna. Notice the horizontal lines at this same frequency band especially at the end. They appear most strongly consistently near Sunset and Sunrise. At Sunset the Earth is moving away from the direction overhead and at Sunrise, the Earth is moving in the direction overhead. These times are when the Space RADAR beam are penetrating the physical places in the Earth’s magnetic field at its weakest. Sometimes the droning from the phenomena is very high amplitude and cannot be ignored. I can only guess this droning is Solar Corona Mass Ejection blanketing the upper atmosphere causing high levels of reflection on the Space RADAR like a giant mirror. Also notice the Satellites are moving at a different velocity from the Meteors, the slanted traces in the Spectrogram.

    Meteor Activity

    unusual events - Click to hear

    Click to Play Time lapse video of assembling a 10 Element 220 Mhz Yagi Antenna for receiving NAVSPASUR signals. Original Music by Jay Salsburg, recorded at, Studio of Blue Light Video Recorded with a GoPro HERO and Mastered with Sony Vegas.

    The principles behind the Government's NAVSPASUR's Antennae (Don't try this at home)

    CAD scale model of earth-space in relation to my receiver. Click for full size.

    Receiver-Earth Geometry

    CAD scale model of earth-space of NAVSPASUR's fence RADAR in relation to the Size of the Earth and relative to my receiver and GPS Satellites. Click for full size.

    RADAR Fence

    Build an easy and cheap 220 MHz 10 Element Yagi Antenna for receiving NAVSASPASUR Signals.

    Bill of Materials:

  • Large PVC Square Downspout, 10 feet long, like that used for rain Gutters.
  • About 20 feet of 2 or 3 conductor #12 outside Romex
  • Box of #8 x 1.5" Truss Washer Lath Screws
  • 1/2" Outdoor Nylon Clamps
  • Yagi Antenna Details Yagi Antenna Details 10-12 element 220 MHz Yagi Antenna