The Experts below are selected from a list of 63 Experts worldwide ranked by ideXlab platform

Bernd Uhl - One of the best experts on this subject based on the ideXlab platform.

  • Digital EO camera system VOS 40/270 for tactical Reconnaissance pos RecceLite
    Airborne Reconnaissance XXVI, 2002
    Co-Authors: Bernd Uhl
    Abstract:

    This paper describes the design concept and the technical features of a new developed EO camera. The camera is integrated on a stabilized sensor platform of a tactical Reconnaissance pod for extended pointing capability and wide field ground coverage.One of the major design constraints was the extremely small space available in the front gimbals, shared with a high resolution IR FPA Sensor in the other half of the gimbals. The line-of-sight of both sensors is harmonized, leading to multi-spectral information of the same ground target. The sensor features a high resolution zoom lens, large FPA detector, automatic focus and exposure control. An unique feature of the camera is automatic mass compensation when the zoom lens elements change their position during FOV change to keep the balancing of the sensors on the gimbal. The VOS 40/270 camera represents a new generation of tactical Reconnaissance sensors for stabilized platform integration. The design of the VOS 40/270 camera system employs the latest emerging technologies in an all Digital Reconnaissance system.

  • Digital eo camera system vos 40 270 for tactical Reconnaissance pos reccelite
    International Symposium on Optical Science and Technology, 2002
    Co-Authors: Bernd Uhl
    Abstract:

    This paper describes the design concept and the technical features of a new developed EO camera. The camera is integrated on a stabilized sensor platform of a tactical Reconnaissance pod for extended pointing capability and wide field ground coverage.One of the major design constraints was the extremely small space available in the front gimbals, shared with a high resolution IR FPA Sensor in the other half of the gimbals. The line-of-sight of both sensors is harmonized, leading to multi-spectral information of the same ground target. The sensor features a high resolution zoom lens, large FPA detector, automatic focus and exposure control. An unique feature of the camera is automatic mass compensation when the zoom lens elements change their position during FOV change to keep the balancing of the sensors on the gimbal. The VOS 40/270 camera represents a new generation of tactical Reconnaissance sensors for stabilized platform integration. The design of the VOS 40/270 camera system employs the latest emerging technologies in an all Digital Reconnaissance system.

Liu Ping - One of the best experts on this subject based on the ideXlab platform.

  • A Short-Time FFT Based Design for Wideband Digital Reconnaissance Receiver
    Signal Processing, 2008
    Co-Authors: Liu Ping
    Abstract:

    Traditional Digital Reconnaissance receivers use both time-domain and frequency-domain data for signal detection and parameter measurement,which makes the system complicated. A kind of system structure for wideband Digital receiver is proposed which is based on short-time FFT,where signal detection and parameter measurement are dealt only with frequency-domain data. To improve the accuracy of time-domain frequency-domain,some algorithm must be adopted. A method for TOA (Time of Arrival)attraction is pro- posed which also uses frequency-domain data. A Digital Reconnaissance system with 250MHz instantaneous bandwidth is built on this structure using FPGA and DSP devices. The improved accuracy of parameter measurement is 10 times more than initial accuracy,which shows the structure is feasible and worthy of application extension.

Jin Tao - One of the best experts on this subject based on the ideXlab platform.

  • Design of a New Multi-channel Parallel Wideband Digital Reconnaissance Receiver
    Science Technology and Engineering, 2013
    Co-Authors: Jin Tao
    Abstract:

    Be aiming at resolving the problem of high sampling rate,which is required in modern radar Reconnaissance receivers.A new signal sampling system is detailed analyzed.The sampling system is made of parallel multi-channel ADC,and the signal spectrum restoration is completed by adaptive beamforming in the system,which can acquire the whole frequency domain information.Then according to the real-time requirements and actual condition of radar Reconnaissance receiver,the performance optimization and parameter calculating are accomplished,and algorithm simulation is completed.The result of algorithm simulation and radar signal processing testing shows that this method can effectively improve the bandwidth of receiver,and achieve the preferable result of frequency spectrum analysis.Therefore,it can be widely used in wideband Digital Reconnaissance receiver.

Cheng Qiao-jin - One of the best experts on this subject based on the ideXlab platform.

  • An Efficient Method of Signal Detection for Wideband Digital Reconnaissance Receiver
    Signal Processing, 2010
    Co-Authors: Cheng Qiao-jin
    Abstract:

    An efficient method is proposed for the realization of high resolution spectrum estimation and weak signals detection in broadband Reconnaissance receiver.The broadband input signal is first divided into several equivalent narrow bands using Digital channelized receiver,and the sub-band spectrums formed by FFT respectively is ranked to recompose the whole spectrum of the input signal.Noise floor is estimated by morphologic operation to correct the spectrum.Signal detection is performed by comparing the corrected spectrum line and the adaptive threshold estimated based on the distribution characteristic of the noise spectrum lines.Analysis and simulation results show the effectiveness of the proposed method.

Steve Frawley - One of the best experts on this subject based on the ideXlab platform.

  • Demonstration of F-CAP TARPS-CD system with real-time airborne image exploitation
    Airborne Reconnaissance XXVII, 2003
    Co-Authors: John N. Lee, Dale C. Linne Von Berg, Melvin R. Kruer, Michael D. Duncan, Michael Colbert, Steve Frawley
    Abstract:

    An upgraded Digital Reconnaissance pod payload, denoted as “Full-Capability” (F-CAP), has been developed and demonstrated as part of the F-14 TARPS-CD (Tactical Air Reconnaissance Pod -- Completely Digital) effort. A key improvement is the incorporation of the NRL-developed ARIES (Airborne Real-time Image Exploitation System) circuit card into the Reconnaissance Management System for in-cockpit display, processing, and geo-location of imagery from the TARPS-CD Digital framing camera system. A special cockpit control panel allows the aircrew to quickly manipulate the video images (e.g., pan, zoom and roam), and create an image segment. The annotated image segment can then be relayed via the F-14 Fast Tactical Imagery (FTI) link to the carrier or to a strike aircraft for target prosecution. A solid-state recorder allows near-instantaneous retrieval of full-resolution imagery recorded earlier, for use by the ARIES card or for transmittal to the ground/carrier via the 274-Mbps CDL link. The F-CAP pod is being evaluated in operational exercises by F-14 squadron VF-32 aboard the carrier USS Harry S Truman.