Aerospace Corporation, THE

0020-EX-ST-2008

Status: Grant Expired Due to New License

WC9XUF
2008-05-29

Documents and Communications: [refresh]

DescriptionCategoryDate
PSSC Testbed designImages2008-01-10
PSSC Orbit LifetimeImages2008-04-04
Freewave FGRM bandwidth figureImages2008-01-10
PSSC Testbed antenna patternImages2008-01-10
FAA sketch and antenna figures v2Images2008-04-04
PSSC Testbed orbit lifetimeText Documents2008-01-10
FCC Code Part 5 subpart 63eText Documents2008-04-18
FAA sketch and antenna figuresText Documents2008-01-10
Application Form:
OET Special Temporary Authority Report
FEDERAL COMMUNICATIONS COMMISSION
APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name
Name of Applicant:  Aerospace Corporation, THE

Address
Attention: David Hinkley (M2-246)
Street Address: 2350 E. El Segundo Blvd
P.O. Box:
City: El Segundo
State: CA
Zip Code: 90245
Country:
E-Mail Address: [email protected]

Best Contact
Give the following information of person who can best handle inquiries pertaining to this application:  
Last Name: Hinkley
First Name: David
Title: PICOSAT project manager
Phone Number: 310-336-5211

Explanation
Please explain in the area below why an STA is necessary:
An STA is required due to the non-commercial, unique research-oriented and short-term nature of the operation. The experiment will be conducted over the maximum STA award period for the PSSC Testbed satellite because it has a rechargeable power system.

Purpose of Operation
Please explain the purpose of operation:  Picosat testing THE RF TECHNICAL DETAILS IN THIS GRANT REQUEST ARE IDENTICAL TO THOSE IN THE GRANT 0802-EX-ST-2006. PSSC Testbed test. The purpose of the operation is to conduct research on solar cell degradation due to space radiation. Solar cells from several manufactures are installed onto a nanosatellite for direct comparison. The PSSC Testbed is a PICOSAT class satellite, weighs less than 7 KG and is a 5 x 5 x 10 inches in dimension (see ?design? Exhibit). It is being launched on the Space Shuttle STS-126 scheduled for liftoff on September 2008, but it may slip. The Shuttle will drop off the PSSC Testbed satellite into a 320 km circular at 51 degrees inclination. Orbital analysis predicts re entry in less than 1 year (see ?lifetime? Exhibit). The PSSC Testbed satellite has a Freewave Technologies, Inc. FGRM radio inside which outputs 2 Watts. We have fixed the frequency (i.e. not hopping or spread spectrum) at 914.7 MHz (see ?bandwidth? Exhibit) so that we can quickly link up with the satellite rather than waiting for the hopping sequence to sync up. (Each radio has its own serial number so only one can be talked to at any given moment). The PSSC Testbed satellite has an omni-directional patch antenna. We have the pattern calculated and tested but use -10dB as the gain for 90% of the sphere area (see ?pattern? Exhibit). When the PSSC Testbed satellite is ejected, it will power-on. However the radio will be in receive-mode only. As the satellite flies over a ground station, the station will be continuously beaconing upwards toward the satellite. When the satellite radio hears the beacon, along with the proper serial number code, it will respond and a link will be established. At that point the ground station will ask the satellite for whatever information it wants namely state of health log files or images from the cameras. The satellite will respond by down-loading the requested information. When the link is lost due to the satellite passing out of view, and if it was transmitting at the time, it will try 256 times to complete the last packet transmitted. If each packet is 72 bytes long and the radio data rate is 38.4 Kbaud, then it will try for only a couple of seconds before the 256 attempts are exceeded. At that point it will go back into a passive receive mode again, awaiting the next beacon from a ground station with the correct serial number. We would like to use three ground stations to communicate with the PSSC Testbed satellite. Each antenna has its benefits and detriments. A typical satellite pass is 5 minutes long, twice per day - so the system spends a lot of time not in use. The largest antenna is the 60? diameter dish in Menlo Park, CA, near Stanford University. It has 41 dB gain, 1.5 deg beam width and would use a 2W Freewave FGRM radio on the feed horn. The second is the 16? dish at The Aerospace Corporation in El Segundo, CA, near LAX airport. It has 30 dB gains, 5 deg beam width and also would use a 2W Freewave FGRM radio on the feed horn. The final ground station is a portable 2-meter diameter dish. This has 22 dB gain, 10 deg beam width and would use a Freewave FGRM radio with the output passed through a 9 W amplifier. This portable station we would like to use somewhere that is RF quiet and also advantageously located for maximum satellite coverage. We are thinking Anchorage Alaska would work well or Irwindale California. The Irwindale site is in the floor of a gravel pit so the power out of the antenna is shielded by the walls of the gravel pit from contaminating the surrounding urban area. See ?FAA? Exhibit. Only the Palo Alto antenna will dip below 30 degrees above the horizon because it is the only one with sufficient gain. It could go as low as 10 degrees off the horizon unless the FCC has an issue however its narrow beam width will prevent it from contaminating urban areas. The other antennas will not go below 30 degrees above the horizon as this would increase the satellite link distance to an unacceptable space loss value for them.

Information
Callsign: WC9XUF
Class of Station: FX MO
Nature of Service: Experimental

Requested Period of Operation
Operation Start Date: 11/10/2008
Operation End Date: 05/10/2009

Manufacturer
List below transmitting equipment to be installed (if experimental, so state) if additional rows are required, please submit equipment list as an exhibit:  
Manufacturer Model Number No. Of Units Experimental
Freewave Technologies FGRM 1 No

Certification
Neither the applicant nor any other party to the application is subject to a denial of Federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862, because of a conviction for possession or distribution of a controlled substance. The applicant hereby waives any claim to the use of any particular frequency or electromagnetic spectrum as against the regulatory power of the United States because of the prvious use of the same, whether by license or otherwise, and requests authorization in accordance with this application. (See Section 304 of the Communications Act of 1934, as amended.) The applicant acknowledges that all statements made in this application and attached exhibits are considered material representations, and that all the exhibits part hereof and are incorporated herein as if set out in full in this application; undersigned certifies that all statements in this application are true, complete and correct to the best of his/her knowledge and belief and are made in good faith. Applicant certifies that construction of the station would NOT be an action which is likely to have a significant environmental effect. See the Commission's Rules, 47 CFR1.1301-1.1319.
Signature of Applicant (Authorized person filing form): David Hinkley
Title of Applicant (if any): PICOSAT program manager
Date: 2008-01-10 00:00:00.0

Station Location
City State Latitude Longitude Mobile Radius of Operation
Palo Alto California North  37  24  11 West  122  10  24
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(a) Width of beam in degrees at the half-power point:   1.50
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   Yes
(a) Overall height above ground to tip of antenna in meters:   20.00
(b) Elevation of ground at antenna site above mean sea level in meters:   150.00
(c) Distance to nearest aircraft landing area in kilometers:   10.00
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft: None
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 914.70000000- MHz FX 2.000000 W 31600.000000 W P 0.16000000 % 357KF1D
City State Latitude Longitude Mobile Radius of Operation
El Segundo California North  33  54  52 West  118  22  49
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(a) Width of beam in degrees at the half-power point:   5.00
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   Yes
(a) Overall height above ground to tip of antenna in meters:   7.00
(b) Elevation of ground at antenna site above mean sea level in meters:   10.00
(c) Distance to nearest aircraft landing area in kilometers:   3.00
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft: None
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 914.70000000- MHz FX 2.000000 W 3162.000000 W P 0.01600000 % 357KF1D
City State Latitude Longitude Mobile Radius of Operation
Anchorage Alaska North  61  10  0 West  150  1  0 20 miles south of Airport on Seward Highway 1 1.00
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(a) Width of beam in degrees at the half-power point:   15.00
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   No
(a) Overall height above ground to tip of antenna in meters:  
(b) Elevation of ground at antenna site above mean sea level in meters:  
(c) Distance to nearest aircraft landing area in kilometers:  
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft:
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 914.70000000- MHz MO 9.000000 W 1258.000000 W P 0.01600000 % 357KF1D
City State Latitude Longitude Mobile Radius of Operation
Irwindale California North  34  6  44 West  117  58  53 Intersection of Buena Vista St and Galen St 1.00
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(a) Width of beam in degrees at the half-power point:   15.00
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   No
(a) Overall height above ground to tip of antenna in meters:  
(b) Elevation of ground at antenna site above mean sea level in meters:  
(c) Distance to nearest aircraft landing area in kilometers:  
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft:
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 914.70000000- MHz MO 9.000000 W 1258.000000 W P 0.01600000 % 357KF1D
City State Latitude Longitude Mobile Radius of Operation
Hawaii North  20  42  30 West  156  15  25 Near AEOS (Adv Electro Optical System) facility on Mount Haleakala, Maui 1.00
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(a) Width of beam in degrees at the half-power point:   15.00
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   No
(a) Overall height above ground to tip of antenna in meters:  
(b) Elevation of ground at antenna site above mean sea level in meters:  
(c) Distance to nearest aircraft landing area in kilometers:  
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft:
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 914.70000000-914.70000000 MHz MO 9.000000 W 1258.000000 W P 0.01600000 %
City State Latitude Longitude Mobile Radius of Operation
New Mexico North  33  45  10 West  106  22  21 North Oscura Peak, White Sands Missile Range, New Mexico 1.00
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(a) Width of beam in degrees at the half-power point:   15.00
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   No
(a) Overall height above ground to tip of antenna in meters:  
(b) Elevation of ground at antenna site above mean sea level in meters:  
(c) Distance to nearest aircraft landing area in kilometers:  
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft:
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
Modified 914.70000000-914.70000000 MHz MO 9.000000 W 1258.000000 W P 0.01600000 %

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