Abstract: A single panel label holder for a product display supports a label for display to shoppers. The single panel traps the label against an adjacent surface of a corresponding shelf. The label holder includes a member for securing the label holder to the shelf. The securing member can include a clip for selectively mounting the label holder to a return flange of a shelf. Alternatively, an adhesive portion is employed to adhere the label holder to the shelf. The securing member could include an end wall joined to a lower wall via a hinge with the end wall extending over a distal end of a return flange of the shelf. Or, the securing member could include at least one flexible fin which engages a return flange of the shelf. A rear surface of the single panel can be textured or provided with protrusions, nubs, etc.

Abstract: A Klystron transmitter for use in weather radar systems has a transmitter module for operating with any of various Klystron tubes designed for different frequency ranges, such as a low S-Band range, a high S-Band range, and a C-Band range. Each of the Klystron tubes is designed to have similar operating characteristics, such as output power and operating voltages. In addition, the transmitter module has driver circuitry for driving the Klystron tube of the transmitter, and such driver circuitry is operable over a wide frequency range so that the same driver circuitry can be used for any of the contemplated bands. Accordingly, the same core transmitter circuitry can be used for any of the Klystron tubes allowing a manufacturer to control which of the contemplated bands is implemented by selecting the appropriate Klystron tube and stable local oscillator (STALO) for the desired band.

Abstract: An inventory shelf monitoring system includes a plurality of track systems located on at least one shelf of a retail or warehouse establishment. Each track system includes a sensor and actuator that determines the position of a product pusher. The identity and location of the product pusher, for each track system on the shelf, is sent to a data acquisition and transmitter circuit that assembles, formats, and transmits pusher position data to a central receiver. The data is then transmitted to a central processing unit in a user device that maintains data corresponding to product count, availability, and activity associated with each track unit of each shelf employing the system. Inventory control, the prevention of out-of-stock situations, and the assessment of activity indicative of theft or accident is thus monitored in real time for prompt remedial action.

Abstract: A calibration system for a dual polarization radar system with built in test couplers has been developed. The system includes a dual polarization radar transmitter antenna that generates a transmission pulse. A test coupler is located behind the antenna that reads a sample of the transmission pulse a test signal. A calibration circuit receives the sample of the transmission pulse and generates a test signal that simulates a desired atmospheric condition. Finally, a test antenna transmits the test signal to the dual polarization radar transmitter antenna for calibration of the system.

Abstract: A dual polarization radar system is calibrated based on real-time data measurements, such as measured horizontal and vertical reflectivities, ZH and ZV. In this regard, the radar system analyzes the reflected power measurements to identify which measurements are associated with reflections from a respective spherical object. Using such measurements, the system determines a system differential reflectivity value, and combines such value with reflected power measurements for calibration. Since the calibration is based on real-time data measurements, the calibration process may run simultaneously with the collection of weather data. Further, the calibration process is immune to the weather events within range of the radar system. Accordingly, it is possible for the calibration to be performed at any time and without interfering with the weather monitoring activities regardless of the types of weather events occurring within the vicinity of the radar system.

Abstract: An inventory shelf monitoring system includes a plurality of track systems located on at least one shelf of a retail or warehouse establishment. Each track system includes a sensor and actuator that determines the position of a product pusher. The identity and location of the product pusher, for each track system on the at least one shelf, is sent to a data acquisition and transmitter circuit that assembles, formats, and transmits pusher position data to a central receiver, which receives corresponding data from all shelves employing the system in the retail or warehouse establishment. The data is then transmitted to a central processing unit in a user device that maintains data corresponding to product count, availability, and activity associated with each track unit of each shelf employing the system in the retail or warehouse establishment.

Abstract: A calibration system for a dual polarization radar system with built in test couplers has been developed. The system includes a dual polarization radar transmitter antenna that generates a transmission pulse. A test coupler is located behind the antenna that reads a sample of the transmission pulse a test signal. A calibration circuit receives the sample of the transmission pulse and generates a test signal that simulates a desired atmospheric condition. Finally, a test antenna transmits the test signal to the dual polarization radar transmitter antenna for calibration of the system.

Abstract: A calibration system for the receiver of a dual polarization radar system has been developed. The system includes a radar transmitter that transmits signals in horizontal and vertical polarizations and a radar receiver that receives the horizontal and vertical polarization signals. The system also includes a test signal generator that generates a continuous wave test signal. A calibration circuit for the radar receiver modifies the test signal to simulate weather conditions by adjusting the attenuation and Doppler phase shift of a continuous wave test signal.

Abstract: A variable ratio power divider (VRPD) used for adjusting a calibration signal for a dual polarization radar system has been developed. The VRPD includes an input line that receives a calibration signal and splits the calibration signal into two separate test signals that have a 0° phase shift between them. The VRPD also includes a horizontal polarization output port for a horizontal calibration signal and a vertical polarization output port for a vertical calibration signal. A waveguide switch receives one of the test signals. If the waveguide switch is operating in a first position, it passes the test signal through a variable 0°-180° phase shifter. This evenly divides the power of the test signals between the horizontal and vertical output ports. If the waveguide switch is operating in a second position, it causes the test signal to bypass the phase shifter so that the entire power of the both test signals is directed entirely to either the horizontal phase output port or the vertical phase output port.

Abstract: A radar system having first and second modes of operation comprising a dual antenna assembly comprising first and second antennas having respective first and second antenna waveguides coupled to a waveguide switch operable to divert RF energy to or from either said antenna waveguide, said waveguide switch coupled to a common waveguide, said dual antenna assembly mounted to an antenna support assembly, said first and second antennas being designed for use in said first and second modes respectively and operable for coupling said RF energy to a transmit medium, and for coupling reflected RF energy from transmit medium to said first or second antenna waveguide; and a control processor configured with control logic operable to control the functions of said radar system wherein said first and second antennas are mounted generally perpendicularly in the vertical plane with respect to each other and wherein said radar system operates in only one of said modes of operation at any time.

Abstract: A radar system having first and second modes of operation comprising a dual antenna assembly comprising first and second antennas having respective first and second antenna waveguides coupled to a waveguide switch operable to divert RF energy to or from either said antenna waveguide, said waveguide switch coupled to a common waveguide, said dual antenna assembly mounted to an antenna support assembly, said first and second antennas being designed for use in said first and second modes respectively and operable for coupling said RF energy to a transmit medium, and for coupling reflected RF energy from transmit medium to said first or second antenna waveguide; and a control processor configured with control logic operable to control the functions of said radar system wherein said first and second antennas are mounted generally perpendicularly in the vertical plane with respect to each other and wherein said radar system operates in only one of said modes of operation at any time.

Abstract: A calibration system for the receiver of a dual polarization radar system has been developed. The system includes a radar transmitter that transmits signals in horizontal and vertical polarizations and a radar receiver that receives the horizontal and vertical polarization signals. The system also includes a test signal generator that generates a continuous wave test signal. A calibration circuit for the radar receiver modifies the test signal to simulate weather conditions by adjusting the attenuation and Doppler phase shift of a continuous wave test signal.

Abstract: An inventory shelf monitoring system includes a plurality of track systems located on at least one shelf of a retail or warehouse establishment. Each track system includes a sensor and actuator that determines the position of a product pusher. The identity and location of the product pusher, for each track system on the at least one shelf, is sent to a data acquisition and transmitter circuit that assembles, formats, and transmits pusher position data to a central receiver, which receives corresponding data from all shelves employing the system in the retail or warehouse establishment. The data is then transmitted to a central processing unit in a user device that maintains data corresponding to product count, availability, and activity associated with each track unit of each shelf employing the system in the retail or warehouse establishment.

Abstract: A variable ratio power divider (VRPD) used for adjusting a calibration signal for a dual polarization radar system has been developed. The VRPD includes an input line that receives a calibration signal and splits the calibration signal into two separate test signals that have a 0° phase shift between them. The VRPD also includes a horizontal polarization output port for a horizontal calibration signal and a vertical polarization output port for a vertical calibration signal. A waveguide switch receives one of the test signals. If the waveguide switch is operating in a first position, it passes the test signal through a variable 0°-180° phase shifter. This evenly divides the power of the test signals between the horizontal and vertical output ports. If the waveguide switch is operating in a second position, it causes the test signal to bypass the phase shifter so that the entire power of the both test signals is directed entirely to either the horizontal phase output port or the vertical phase output port.

Abstract: A method of calibrating a dual polarization weather radar system has been developed. The method first generates a transmission pulse from the radar system. The transmission pulse is then modified to generate a test signal that simulates a desired atmospheric condition. The test signal is transmitted directly into the radar system from a test antenna and the radar system is calibrated according to the test signal.

Abstract: A calibration system for the receiver of a dual polarization radar system has been developed. The system includes a radar transmitter that transmits signals in horizontal and vertical polarizations and a radar receiver that receives the horizontal and vertical polarization signals. The system also includes a test signal generator that generates a continuous wave test signal. A calibration circuit for the radar receiver modifies the test signal to simulate weather conditions by adjusting the attenuation and Doppler phase shift of a continuous wave test signal.

Abstract: A variable ratio power divider (VRPD) used for adjusting a calibration signal for a dual polarization radar system has been developed. The VRPD includes an input line that receives a calibration signal and splits the calibration signal into two separate test signals that have a 0° phase shift between them. The VRPD also includes a horizontal polarization output port for a horizontal calibration signal and a vertical polarization output port for a vertical calibration signal. A waveguide switch receives one of the test signals. If the waveguide switch is operating in an open position, it passes the test signal through a variable 0°-180° phase shifter. This evenly divides the power of the test signals between the horizontal and vertical output ports. If the waveguide switch is operating in a closed position, it causes the test signal to bypass the phase shifter so that the entire power of the both test signals is directed entirely to either the horizontal phase output port or the vertical phase output port.

Abstract: A method of calibrating a dual polarization weather radar system has been developed. The method first generates a transmission pulse from the radar system. The transmission pulse is then modified to generate a test signal that simulates a desired atmospheric condition. The test signal is transmitted directly into the radar system from a test antenna and the radar system is calibrated according to the test signal.