International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / Binary PCM/FM has been widely adopted as a standard by the telemetry community. It offers a reasonable balance between detection efficiency and spectral efficiency, with very simple implementation in both the transmitter and receiver. Current technology, however, allows practical implementations of more sophisticated demodulators, which can substantially improve the detection efficiency of the waveform, with no changes to the modulator. This is accomplished by exploiting the memory inherent in the phase continuity of the waveform. This paper describes the implementation and performance of a noncoherent multi-symbol demodulator for PCM/FM. Sensitivity to offsets in carrier frequency, timing, and modulation index is also examined. Simulation results are presented which demonstrate improvements in detection efficiency of approximately 2.5 dB over traditional noncoherent single symbol detectors.

International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / This paper introduces the frequency spectrum characteristic of FM radio broadcast and the message format of RBDS (Radio Broadcast Data System). DGPS correction message in RBDS is described in detail. A design method of RBDS/DGPS system is proposed and the RBDS/DGPS system developed by us is introduced. Finally, some special advantages of RBDS/DGPS system are given.

International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / This paper describes the technology on transmitting a single super fast waveform signal in real-time and introduces the general situation of the telemetry transmitter in vehicle. The equipment is a FM system in view of RF frequency, it is a pulse system in view of RF power. This equipment can transfer not only super fast waveform signals but also slowly varying conventional telemetry signals. The design is very novel. It is a multi-usage telemetry transmitter in vehicle.

International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / It has been shown that a multi-symbol detector can improve the detection efficiency of PCM/FM by 3 dB when compared to traditional methods without any change to the transmitted waveform. Although this is a significant breakthrough, further improvements are possible with the addition of Forward Error Correction (FEC). Systematic redundancy can be added by encoding the source data prior to the modulation process, thereby allowing channel errors to be corrected using a decoding circuit. Better detection efficiency translates into additional link margin that can be used to extend the operating range, support higher data throughput, or significantly improve the quality of the received data. This paper investigates the detection efficiency that can be achieved using a multisymbol detector and turbo product coding. The results show that this combination can improve the detection performance by nearly 9 dB relative to conventional PCM/FM systems. The increase in link margin is gained at the expense of a small increase in bandwidth and the additional complexity of the encoding and decoding circuitry.

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / It has been previously shown, through computer simulations, that a multiple symbol detector can provide substantial gains in detection efficiency (nearly 3 dB) over traditional PCM/FM detectors. This is accomplished by performing correlations over multiple symbol intervals to take advantage of the memory inherent in the continuous phase PCM/FM signal. This paper presents measured hardware results, from a prototype developed for the Advanced Range Telemetry (ARTM) Project, that substantiate the previously published performance and sensitivity predictions. Furthermore, this work confirms the feasibility of applying this technology to high-speed commercial and military telemetry applications.

ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / The performance of telemetry systems may be strongly affected by diverse sources of perturbations. Among them, multipath channels and transmission noise are the most critical. While the effects due to the multipath channels can be attenuated thanks to equalization, the effects of the noise are limited if forward error correction is used. This paper first proves that the combination of blind equalization and forward error correction can strongly improve bit error rates. The other objective of the paper is to show that reasonably powerful codes like Reed-Solomon codes are sufficient to enable quasi-error free transmissions in a large majority of propagation channel scenarios.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Transmitter mobility and multipath propagation make the telemetry channel both time and frequency selective, which results in telemetry link errors, sometimes in crucial flight phases. Only part of these impairments are compensated by various diversity techniques, but a fast converging adaptive channel equalization is probably the best suited and most cost effective solution. This paper first presents an analysis of mobile multipath propagation in telemetry based on recorded operational signals, both at the transmitter and at the receiver sides. Then it provides performance evaluation of a novel blind equalizer, assessed by offline processing of the recorded signals. The paper focuses on typical environments at a flight test centre, which exhibit critical multipath channel characteristics, namely during parking, taxiway and flight. The channel analysis exploits the recorded signals as well as the time frequency response of the novel equalizer filter. Performance evaluation shows that the equalizer outperforms state of the art Constant Modulus Algorithm (CMA). In particular, it is shown to significantly increase the telemetry link availability even in severe conditions, sometimes from nearly 0% to almost 100%, whereas the CMA fails to improve the signal quality as soon as the channel varies in time.

<p>Mobile Phone, without this we can’t think to pass a day in presence. We have found a rapid increase of mobile phone users from a few years ago till now. Day by day the modern technologies allow the mobile phone to become smaller, cheaper, and more reliable. This also creates new possibilities for applications and integrations of the classical broadcast systems and modern mobile phone technologies. One example is the FM transmitter in mobile phone. The FM transmitter in a mobile phone is a “cool” feature which allows listening to the music content in phone on a car or home radio.</p><p> </p><p>This thesis work deals with the near field characterization of FM transmitters in mobile phone applications. The RF scientists and engineers neglect the near field zone because typical RF links operate at distances of many wavelengths away where near field effects are totally insignificant. But in this work we are interested in the near field properties of the FM transmitter. We measured the field intensity at near field and estimated the field strength at the far field region at 3 meters. To measure the field intensity and the effective radiated power we used HR1 near field scanner. As this is a new measurement approach, we made the validation of this system by measuring a reference dipole antenna at 880MHz and then compare the measured results to the CST simulation results. A basic phone model of FM transmitter has been created by CST simulation and a prototype has been made which was also used as our DUT. After validation of the near field measurement system we measured our DUTs (3 models-one cable fed prototype and two active devices) with the near field system and estimate the effective radiated power and field intensity at 3 meter. Furthermore, we measured our DUTs at 3 meter with a far field measurement system with optical fiber connection. A feasible relation between field strength and measured power was defined in order to correlate the near field scanner results with the far field measurement system.</p><p> </p><p>This paper also provides a short design guide line for built in FM antennas by relating the antenna size and placement to input power and the field strength in mobile phone FM transmitter application</p>

<p>Problemställning: FM FysS är en av de arbetsuppgifter du som anställda inom Försvarsmaktenskall genomföra. Genomförs detta ute på förbanden, på kompanierna av den enskilde individen? Hur ser kunskapsnivån och utövandet av FM FysS med tilläggskrav ut bland de anställda inomFörsvarsmakten?</p><p>Syfte: Syftet med denna undersökning är att kartlägga om huruvida kunskapsnivån hos deanställda inom insatsorganisationen på regementet LedR är rörande FM FysS, samt om huruvidade även följer FM FysS och genomför de obligatoriska fysiska tester som finns. Utifrån svaret på undersökningen så kommer det finnas möjlighet till att genomföra mer grundligkartläggning för att jämföra olika kompanier och olika grader.</p><p>Frågeställningar: Hur ser kunskapsnivån och utövandet inom insatsorganisationen på LedR utkopplat mot FM FysS med tilläggskrav? Använder sig de anställda inom insatsorganisationen av FM FysS tilläggskrav i planerandet och utövandet av sin fysiska träning?</p><p>Teori: Teorianknytningen i denna uppsats är indirekt.</p><p>Metod: För att få svar på frågeställningen så har en enkät utformats. Syftet med enkäten är att kartlägga insatsorganisationen på LedR kopplat mot frågeställningen.</p><p>Resultat: Det finns tydliga brister inom insatsorganisationen på LedR kopplat mot de anställdaskunskap och utövande av FM FysS. Även inom området för det fysiska tilläggskravet förbefattningar inom insatsorganisationen så finns det tydliga brister hos de anställda. Brister inom vilket tilläggskrav som gäller för den enskildes befattning samt för genomförandet av det årligen obligatoriska fysiska testet kopplat mot tilläggskravet.</p> / <p>The issue: FM FysS is one of the tasks that you as an employed in the Armed Forces to carryout. Implemented this out on the troops, the companies and of the individual? What are the levelof knowledge and the execution of FM FysS with additional requirements from among the employees of the Armed Forces?</p><p>Purpose: The purpose of this study is to identify whether the level of expertise of the employees in intermediate organizations in the regiment is on Ledr about FM FysS, and whether they also follow FM FysS and implement the required physical tests available. Based on the response to the survey, it will be possible to implement more thorough survey inorder to compare different companies and different degrees.</p><p>Research questions: What is the level of knowledge and exercise intervention in the organization at the Ledr linked to FM FysS the additional requirements? Uses the employees of intermediate organizations FM FysS additional requirements in the planning and the exercise of their physical fitness?</p><p>Theory: Theory Articulation of this assignment is indirect.</p><p>Method: To answer the questions a questionnaire has been designed. The questionnaire is to survey organization effort at Ledr linked to topic.</p><p>Results: There are clear gaps in the response organization at Ledr linked to employees' knowledge and practice of FM FysS. There are gaps within the organization among the employees about the additional requirements as well. Deficiencies in any additional requirements that apply to the individual's position and for the implementation of the mandatory annual physical exam related to the additional requirement.</p>

<p>Denna uppsats behandlar ämnet Försvarsmaktens Fysiska Standard. Uppsatsens syfte är att skapa ett underlag för att förbättra eller bibehålla möjligheterna för officerarna vid Artilleriregementet A9 att genomföra Försvarsmaktens Fysiska Standard (FM FysS). Detta för att uppfylla de krav som ställs avseende fysisk prestationsförmåga på en officer i Försvarsmakten. Den frågeställning som använts är <em>Hur uppfattar officerarna på A9 att de genomför FM FysS?</em></p><p>Den metod som använts är en enkätundersökning som genomförts bland officerarna på A9.</p><p>Resultatet från enkätundersökningen visar att det finns både positiva delar som bör bibehållas och förbättringspunkter för genomförandet av FM FysS. De huvuddrag som konstateras är att fördelningen mellan delarna kondition, styrka och rörlighet i träningen är god och skall bibehållas på regementet. Officerarna på A9 sätter i hög grad upp träningsmål för sin träning på arbetstid vilket är positivt. Förbättring bör ske inom uppföljning och utvärdering, samt genomförande av tester på tilläggskraven.</p>