Paul Lawrence Mohan

US Patent:

6657587, Dec 2, 2003

Filed:

May 16, 2000

Appl. No.:

09/571899

Inventors:

Paul L. Mohan - Novi MI

Assignee:

Veridian ERIM International, Inc. - Ann Arbor MI

International Classification:

G01S 502

US Classification:

3423571, 34235709, 342419, 701213

Abstract:

A tracking system uses a miniaturized geographic position determination and communications module, preferably in the form of a thin capsule, enabling the enclosure to be hidden in very small spaces, including personal concealment. Electronic circuitry and a thin, rechargeable battery are contained within the enclosure, the circuitry including a global positioning satellite receiver, a communications transceiver, and a controller. The controller causes the global positioning satellite receiver to receive and decode a signal relating to the geographic position of the module; cause the communications transmitter to communicate the geographic position information to a remote location; and disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power.

US Patent:

6894506, May 17, 2005

Filed:

Sep 11, 2002

Appl. No.:

10/241209

Inventors:

Paul L. Mohan - Novi MI, US
James E. Poplawski - Ann Arbor MI, US

Assignee:

Veridian Systems - Ann Arbor MI

International Classification:

G01R027/04

US Classification:

324637, 73602

Abstract:

The spectral content of the interference response at a sensor array is taken into account and used to advantage in remote sensing or imaging an object or scene. The phase relationship between sensor elements is preserved, enabling the natural interference spectrum to be processed to generate a particular spatial response of the aggregate beam pattern. The method applies to diverse forms of broadband illumination or emissions including acoustic and electromagnetic radiation, and provides remote sensing capabilities linked to the sensor elements appropriate to the wavelength band of interest (e. g. , acoustic, RF or optical). Since the relative geometry between the source, scene and sensing array is responsible for the generation of a desirable interference response, the source of illumination need only maintain a small degree of coherence (some finite correlation length), and can operate in a pulsed or continuous (CW) mode. For passive sensing, the method can be applied to emissions derived from the object/scene itself. The processing technique exploits specific frequency/time domain features of the interference response and can apply them to a number of useful purposes including: 1) remote imaging of a scene, 2) remote characterization of an object of interest and 3) characterization of an intervening media between a source and the sensor array.

US Patent:

6956523, Oct 18, 2005

Filed:

Jun 16, 2003

Appl. No.:

10/462525

Inventors:

Paul Mohan - Novi MI, US

Assignee:

Veridian Systems - Ann Arbor MI

International Classification:

G01S013/06
G01S013/32
G01S013/66

US Classification:

342133, 342 52, 342 54, 342 59, 342104, 342107, 342128, 342147, 342195, 342450, 342451, 342463, 342464, 342465

Abstract:

A system and method for rapidly determining the source of an incoming projectile applies controlled, active RF energy source(s) to illuminate a target area/projectile, and exploits Doppler induced frequency shifts from multiple receivers to develop a vector solution. The preferred solution applies continuous wave (CW) RF illuminators to flood a local region with a controlled source of radio frequency energy and one or more displaced receiver elements. The system operates multi-statically and as an incoming projectile enters the illuminated region, reflected energy from one or more illuminators is detected by one or more displaced RF receivers. Doppler shifts imparted on the reflected signals are detected by the receivers as the projectile moves through the region. Appropriate processing of the receiver outputs generates Doppler time-frequency profiles that are used to derive an estimate of the projectile flight vector in 3-space (x,y,z). The vector parameters can, among other things, feed a laser designator that projects a beam along the derived flight path to support identification of the source, or be relayed to remote personnel by a data link where the projectile vector can be displayed on a map.

US Patent:

6980151, Dec 27, 2005

Filed:

Jun 14, 2004

Appl. No.:

10/868675

Inventors:

Paul L. Mohan - Novi MI, US

Assignee:

General Dynamics Advanced Information Systems, Inc. - Arlington VA

International Classification:

G01S013/88
G01S013/02
G01S007/35

US Classification:

342 13, 342 5, 342 12, 342 14, 342 27, 342 28, 342 61, 342118, 342128, 342192, 342195, 342196

Abstract:

A bi-static continuous wave radar system and related methods for detecting incoming threats from ballistic projectiles includes a remote source of RF illumination, and a local receiver installed in one or more target aircraft. A first receiving channel acquires direct path illumination from the source and provides a reference signal, and a second receiving channel acquires a scatter signal reflected by a projectile. A processor coupled to each receiver corrects scatter signal Doppler offset induced by relative source motion, isolates narrowband Doppler signals to derive signatures characteristic of the projectile, and by executing appropriate algorithms, compares the derived signatures to modeled signatures stored in memory. If the comparison yields a substantial similarity, the processor outputs a warning signal sufficient to initiate defensive countermeasures.

US Patent:

20040012518, Jan 22, 2004

Filed:

Jul 3, 2003

Appl. No.:

10/613247

Inventors:

Paul Mohan - Novi MI, US

International Classification:

G01S005/14

US Classification:

342/357100, 342/357070

Abstract:

A tracking system uses a miniaturized geographic position determination and communications module, preferably in the form of a thin capsule, enabling the enclosure to be hidden in very small spaces, including personal concealment. Electronic circuitry and a thin, rechargeable battery are contained within the enclosure, the circuitry including a global positioning satellite receiver, a communications transceiver, and a controller. The controller causes the global positioning satellite receiver to receive and decode a signal relating to the geographic position of the module; cause the communications transmitter to communicate the geographic position information to a remote location; and disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power. The geographic position information may be communicated to a remote location either in response to a carrier activating a panic function or after receiving a request from a remote location which commences the transmission in response to the request. In a system-level configuration, the miniaturized module is used in conjunction with a portable locating unit operative to receive the geographic position information at the remote location and inform a user as to the location of the miniaturized module. Preferably the portable locating unit further includes a positioning satellite receiver of its own and a display, enabling the locating unit to visually indicate the location of the miniaturized module relative to that of the locating unit.

US Patent:

49310216, Jun 5, 1990

Filed:

Jun 24, 1988

Appl. No.:

7/211260

Inventors:

Paul Mohan - Northville MI

Assignee:

Environmental Research Institute of Michigan - Ann Arbor MI

International Classification:

H01R 907

US Classification:

439285

Abstract:

The present invention comprises apparatus for connecting and disconnecting substantially planar arrays of electrical contact sites in a mechanically secure and functionally rapid and reversible manner. The invention utilizes technology availalble in the zipper manufacturing industry, to achieve a high contact site density by suitably disposing contact sites for electrical connections on zipper teeth, and through the use of a conventional zipper-type runner achieving the interconnection of a multiplicity of electrical contact sites.

US Patent:

61219223, Sep 19, 2000

Filed:

Oct 12, 1994

Appl. No.:

8/321941

Inventors:

Paul L. Mohan - Novi MI

Assignee:

Veridian ERIM International, Inc. - Ann Arbor MI

International Classification:

G01S 502
H04B 7185

US Classification:

3423571

Abstract:

A tracking system uses a miniaturized geographic position determination and communications module, preferably in the form of a thin capsule, enabling the enclosure to be hidden in very small spaces, including personal concealment. Electronic circuitry and a thin, rechargeable battery are contained within the enclosure, the circuitry including a global positioning satellite receiver, a communications transceiver, and a controller. The controller causes the global positioning satellite receiver to receive and decode a signal relating to the geographic position of the module; cause the communications transmitter to communicate the geographic position information to a remote location; and disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power. The geographic position information may be communicated to a remote location either in response to a carrier activating a panic function or after receiving a request from a remote location which commences the transmission in response to the request.

US Patent:

49813366, Jan 1, 1991

Filed:

Aug 3, 1989

Appl. No.:

7/388819

Inventors:

Paul Mohan - Northville MI

International Classification:

G02B 640

US Classification:

350 96221

Abstract:

The present invention comprises apparatus for connecting and disconnecting substantially planar arrays of optoelectrical contact sites in a mechanically secure and functionally rapid and reversible manner. The invention utilizes technology available in the zipper manufacturing industry, to achieve a high contact site density by suitably disposed contact sites for opotoelectronic connections on zipper teeth, and through the use of a conventional zipper-type runner achieving the interconnection of a multiplicity of optoelectrical contact sites.