IEEE Transactions on Space Electronics and Telemetry最新文献_第6页

A Boolean-Function-Multiplexed Telemetry System 布尔函数多路遥测系统

IEEE Transactions on Space Electronics and Telemetry Pub Date : 1963-06-01 DOI: 10.1109/TSET.1963.4337602

R. Titsworth

引用次数: 12

Delay-Lock Tracking of Binary Signals 二进制信号的延时锁定跟踪

IEEE Transactions on Space Electronics and Telemetry Pub Date : 1963-03-01 DOI: 10.1109/TSET.1963.4337590

J. J. Spilker

引用次数: 132

A Magnetic Core Voltage-to-Frequency Converter 一种磁芯电压-频率转换器

IEEE Transactions on Space Electronics and Telemetry Pub Date : 1963-03-01 DOI: 10.1109/TSET.1963.4337592

S. Paull

引用次数: 2

An Analytic Approximation of Phase-Lock Receiver Threshold 锁相接收机阈值的解析逼近

IEEE Transactions on Space Electronics and Telemetry Pub Date : 1963-03-01 DOI: 10.1109/TSET.1963.4337591

J. Develet

{"title":"An Analytic Approximation of Phase-Lock Receiver Threshold","authors":"J. Develet","doi":"10.1109/TSET.1963.4337591","DOIUrl":"https://doi.org/10.1109/TSET.1963.4337591","url":null,"abstract":"The quasi-linearization procedure of Booton is applied to obtain an analytic approximation to phase-lock receiver threshold. Only the situation of an unmodulated sinusoid embedded in additive white Gaussian noise has been considered. The threshold signal-to-noise power ratio in the two-sided loop noise bandwidth of a phase-lock receiver of arbitrary transfer function was found to be 1.34 db. At threshold the rms loop error is 1.0 radian. The special situation of a high gain second-order receiver was also treated. In order to compare the analytical results with possible future measurements, the high S/N bandwidth was chosen as a reference point. Referred to this high S/N bandwidth, the threshold signal-to-noise power ratio of -0.2 db and a corresponding rms loop error of 1.16 radians were derived. The applicability of Booton's linearization procedure to nonlinear systems with statistical inputs has been experimentally verified in control system applications similar in nature to the phase-lock loop with excellent results. It is therefore anticipated that the application to phase-lock loop analysis should yield a mathematical model which describes the system more closely than strictly linear approximations.","PeriodicalId":153922,"journal":{"name":"IEEE Transactions on Space Electronics and Telemetry","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1963-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126791630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Transmitter Power Reduction with Frequency Tracking FM Receivers 频率跟踪调频接收机降低发射机功率

IEEE Transactions on Space Electronics and Telemetry Pub Date : 1963-03-01 DOI: 10.1109/TSET.1963.4337593

R. Gagliardi

{"title":"Transmitter Power Reduction with Frequency Tracking FM Receivers","authors":"R. Gagliardi","doi":"10.1109/TSET.1963.4337593","DOIUrl":"https://doi.org/10.1109/TSET.1963.4337593","url":null,"abstract":"In analog communication studies much attention has recently been given to the apparent advantages of FM transmission with receivers employing feedback frequency tracking. Although theoretical investigation has indicated some carrier power reduction can be obtained over standard FM, it has been difficult to estimate the operating capabilities of the system. In addition, little has been published concerning the best parameter values for the construction of a typical feedback receiver. This paper is devoted to a study of the feedback FM receiver which maximizes power savings over standard FM for a given desired output SNR. System parameters such as transmitter modulation index, loop gain IF bandwidth, and baseband filter bandwidth are specified corresponding to this optimum design. Particular attention is given to the output SNR in the range from 15 db to 50 db where most practical analog systems usually operate. The paper deals only with the feedback loop containing two stages of filtering; design procedure is also given when added constraints are imposed in terms of loop transient response. The possibility of using phase-lock loops as the discriminator within the FM feedback loop is also investigated. Some experimental results are quoted which tend to verify the design techniques.","PeriodicalId":153922,"journal":{"name":"IEEE Transactions on Space Electronics and Telemetry","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1963-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124425061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Distortion of Multitone FM Signals Due to Phase Nonlinearity 相位非线性引起的多音调频信号失真

IEEE Transactions on Space Electronics and Telemetry Pub Date : 1963-03-01 DOI: 10.1109/TSET.1963.4337594

P. Shaft

引用次数: 4