JOSEPH J POIRIER
Engineering in Kates Corner, MA
License number
Massachusetts 51087
Issued Date
Jun 3, 2014
Expiration Date
Jun 30, 2018
Type
Mechanical Engineer
Address
Address
Kates Corner, MA 01824
Professional information
Intrusion Detection System Having Look-Up Sensor Instrumentation For Intrusion Range And Altitude Measurements
US Patent:
4318102, Mar 2, 1982
Filed:
Apr 15, 1980
Appl. No.:
6/140551
Inventors:
Joseph L. Poirier - Chelmsford MA
Assignee:
The United States of America as represented by the Secretary of the Air
Force - Washington DC
Force - Washington DC
International Classification:
G01S 1308
US Classification:
343 12A
Abstract:
Range and elevation measurement ambiguities in upward looking intruder detection systems are eliminated by look-up sensor instrumentation that utilizes monostatic and bistatic radar principles. Intruder detection systems that have the capability of monitoring the air space over the perimeter of an area to be protected and that employ radar ranging techniques and guided wave sensor generate only limited or ambiguous intrusion event information. That is, the r. f. signals that are transmitted and received travel from the transmitter-receiver-processor location through the sensor, up to the intrusion and back through the same path. The data developed is thus the same for high altitude close range intrusions as it is for low altitude distant intrusions. This ambiguity is eliminated by utilizing a transmitter and receiver at one end of the upward looking sensor and a second receiver at the other end. The transmitter and its associated receiver comprises a monostatic radar and the transmitter and the other receiver comprises a bistatic radar.
System To Simulate Motion And Plasma Induced Signal Variations From Reentry Vehicles
US Patent:
4005366, Jan 25, 1977
Filed:
Aug 18, 1975
Appl. No.:
5/605578
Inventors:
Joseph L. Poirier - Chelmsford MA
David H. Tropea - Brocton MA
David H. Tropea - Brocton MA
Assignee:
The United States of America as represented by the Secretary of the Air
Force - Washington DC
Force - Washington DC
International Classification:
G09B 902
US Classification:
325 67
Abstract:
A system to simulate motion and plasma induced variations in the attenuation of signals transmitted from reentry vehicles uses a controlled attenuator which is programmed to vary the output power of a test transmitter in a way which simulates the variation which would be observed in actual flight. The simulator can be programmed by either an analog wave shaper or a digital driver to control the attenuation characteristics of a voltage control attenuator thus producing signal variations equivalent to those induced by the plasma sheath and motion of the vehicle.