TRANSMITTER LOCATION SYSTEM FOR FREQUENCIES BELOW HF
Assignee
US Government
Filed as: UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Filed
Apr 26, 1972
Granted
Dec 17, 1991
Location
San Diego CA (SAIC/General Dynamics)
Abstract
Differential phase measurement techniques and apparatus for accurately loing unknown transmitters over great distances at radio frequencies below HF. A network of separated, time- and phase-synchronized, pairs of receiving stations having vertical whip antennas and having a known base-line geometry with respect to each other are used to accurately measure VLF phase differentials. The measured phase differences are compared against theoretical calculated values to provide highly accurate transmitter location information.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 3, 1982
Rescinded
Apr 30, 1991
Duration
9 years, 2 months
Inventor
- 1WALLACE D. WESTFALL
Sensitive facility: San Diego CA (SAIC/General Dynamics)
Record Details
- Patent number
- US 5073784
- Application
- 05249443
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
US GovernmentMore from this assignee
ENERGETIC FLUORONITRO PREPOLYMER
US Government
PULSE SAMPLED OPTICAL FIBER HYDROPHONE ARRAY (U)
US Government
ELASTOMERIC IMPULSE ENERGY STORAGE AND TRANSFER SYSTEM
US Government
MONITORING SYSTEM AND METHOD FOR NUCLEAR WEAPONS EFFECTS DETECTION AND DAMAGE ASSESSMENT
US Government
ANALOG VIDEO PROCESSOR
US Government
SIGNAL PROCESSOR
US Government
Related by domain
AIRBORNE RADAR JAMMING SYSTEM
BOEING, COMPANY, THE
METHOD AND APPARATUS FOR THE DETECTION OF OBJECTS USING ELECTROMAGNETIC WAVE ATTENUATION PATTERNS
JG TECHNOLOGIES LLC
DUAL INFRARED BAND OBJECTIVE LENS
OPTICAL NIGHT VISION DEVICE WITH STANDARD LIGHT INTENSIFIER
THOMSON-CSF SEXTANT
MULTIPLE INFRARED MISSILE JAMMER
LOCKHEED SANDERS INC, A DELAWARE CORPORATION
BANDGAP RADIATION DETECTOR