International Telemetering Conference Proceedings, Volume 25 (1989)http://hdl.handle.net/10150/5784452024-03-28T16:33:58Z2024-03-28T16:33:58ZInternational Telemetering Conference Proceedings, Volume 25 (1989)http://hdl.handle.net/10150/6665232022-10-30T01:10:42Z1989-11-01T00:00:00ZInternational Telemetering Conference Proceedings, Volume 25 (1989)
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California
1989-11-01T00:00:00ZAIRBORNE TELEMETRY TRENDS FOR THE 1990’sVan Doren, Richard E.http://hdl.handle.net/10150/6152352020-04-02T11:26:50Z1989-11-01T00:00:00ZAIRBORNE TELEMETRY TRENDS FOR THE 1990’s
Van Doren, Richard E.
Telemetry hardware technology and application requirements have undergone significant changes in the last 25 years. The trends have produced flight hardware which has had increasingly higher performance, flexibility, reliability and power efficiency while achieving smaller size and weight. This paper will review the evolution and attempt to forecast the direction and trends for future requirements and solutions through the 1990’s.
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California
1989-11-01T00:00:00ZDigitized Doppler Signal ProcessorPawelka, Robert H.http://hdl.handle.net/10150/6152342020-04-02T12:23:25Z1989-11-01T00:00:00ZDigitized Doppler Signal Processor
Pawelka, Robert H.
At the present time there is a requirement for developing an airborne approach for processing radar doppler video data into digital PCM format compatible with current IRIG standards. Techniques for digitizing the doppler video presently exist, but have limitations due to the fact that the data is processed and represented in the time domain. These limitations can be mainly attributed to the high bit rates required for quantizing the dynamic nature of the doppler signal. Therefore, an alternate approach was selected by which the video doppler data is converted and represented in the frequency domain. The time to frequency domain conversion is accomplished with a digital Part Fourier Transform (FFT) implemented in conjunction with a quadrature translator. This method will provide a means by which the doppler signal can be represented as a quasi-static spectrum. The advantage in this application is that only the spectral data which contains relevant engineering information will be processed. The resultant system will thereby minimize the transmission bit rate and maximize the dynamic range for the purpose of signal analysis. The paper will describe the implementation and work performed on the digitized doppler signal processor along with the potential application in PCM systems requiring spectral signal analysis.
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California
1989-11-01T00:00:00ZHardware Implementation of a Digital Anti-aliasing FilterConell, Davidhttp://hdl.handle.net/10150/6152132020-04-02T12:23:24Z1989-11-01T00:00:00ZHardware Implementation of a Digital Anti-aliasing Filter
Conell, David
This paper presents a practical application of a realtime, in-flight programmable digital filter. This filter consists of one module in a PCM system consisting of a central unit and one or more remotes. The paper will also discuss how filtering is achieved given that the PCM format is also user programmable.
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California
1989-11-01T00:00:00Z