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# Communications, Radar and Signal Processing, IEE Proceedings F

## Filter Results

Displaying Results 1 - 11 of 11
• ### Sensitivity to direction of motion of a self-oscillating-mixer Doppler radar

Publication Year: 1982, Page(s):233 - 240
| | PDF (806 KB)

New phenomena which provide target direction-of-motion detection with millimetre-wave Doppler sensors are described. The phase relationships between the Doppler beat¿¿ fundamental frequency and harmonics can be such that a natural nonsinusoidal waveform effectively tilts¿¿ in opposite directions for opposite target motions. Criteria for practical applications of these phenomena are analysed. Har... View full abstract»

• ### Performance of the Decca Navigator on land

Publication Year: 1982, Page(s):241 - 248
Cited by:  Papers (1)
| | PDF (1087 KB)

After noting some characteristics of the Decca Navigator hyperbolic radio aid to navigation, the paper summarises the performance of the system when used on land (e.g. as a position sensor for automatic vehicle location). Reference is made to early theoretical and practical work on the variation of the phase of the LF signals with range, especially over land paths; on the local effects of inhomoge... View full abstract»

• ### Synchronous area coverage for UHF FM portable radio telephones

Publication Year: 1982, Page(s):249 - 254
| | PDF (696 KB)

The paper describes the development of synchronous area-coverage techniques for UHF FM portable radio telephones. In order to evaluate the technique, UHF nondemodulating repeaters were developed and installed on three typical radio sites around the city of Bath, and facilities were included in this protype scheme to enable a direct comparison between synchronous and quasisynchronous working on a s... View full abstract»

• ### Extension of Mueller's theory on optimum pulse shaping for data transmission

Publication Year: 1982, Page(s):255 - 260
Cited by:  Papers (2)
| | PDF (520 KB)

A novel theory for finding the optimum pulse waveform for data transmission is presented. It leads to a finite-duration pulse with zero intersymbol interference and maximum energy concentration in a given bandwidth. The synthesised pulse is piecewise linear rather than the staircase pulse previously discussed in the literature. View full abstract»

• ### Maximum-likelihood receiver for low-angle tracking radar. Part 1: The symmetric case

Publication Year: 1982, Page(s):261 - 272
Cited by:  Papers (11)
| | PDF (1246 KB)

A new maximum-likelihood processor is described for estimating the elevation angle of a target in the combined presence of specular multipath and receiver noise, as encountered in a low-angle tracking-radar environment. The processor makes special use of the symmetry of the incident direct and specular multipath components with respect to the normal to the receiving array. The theory of the proces... View full abstract»

• ### Detection of FSK and DPSK data signals by pulse compression

Publication Year: 1982, Page(s):273 - 280
| | PDF (832 KB)

The paper examines the application of pulse-compression techniques used in radar systems to FSK and PSK detection. Noncoherent FSK and differentially coherent PSK detection schemes using a mixer followed by a pulse-compressor matched filter are investigated. The mixer-PCMF combination, which acts as a predetector processor, converts the FSK modulation into pulse-position modulation and the PSK mod... View full abstract»

• ### Use of aircraft-derived data to assist in ATC tracking systems. Part 1: Accuracy and theoretical considerations

Publication Year: 1982, Page(s):281 - 288
Cited by:  Papers (1)
| | PDF (869 KB)

At present, aircraft tracks for ATC purposes are formed by processing SSR data only, but the introduuction of systems such as ADSEL and DABS makes it possible to transmit to the ground station measurements available on board to assist in radar tracking. The two main areas of application are to improve the performance of present trackers during straight-line flight and during manoeuvres. The accura... View full abstract»

• ### Range sidelobe elimination in phase-coded pulse radars

Publication Year: 1982, Page(s):289 - 296
| | PDF (782 KB)

A method for reducing sidelobes in processing echoes received in phase-coded pulse radars is proposed. A recursive stable time-variant filter structure is derived which approximates an inverse code filter according to a least-squares optimality criterion. The application to the case of phase coding with binary Barker sequences is examined in detail. Performance of less complex but suboptimal filte... View full abstract»

• ### Robust signal and array processing

Publication Year: 1982, Page(s):297 - 302
Cited by:  Papers (5)
| | PDF (538 KB)

Robustness is an important attribute in engineering systems. The paper presents a new notion of robustness as applied to signal and array processing. A filter is termed robust if its output is satisfactory even when there is uncertainty in the input signal shape. The mathematical definitions of satisfactory¿¿ and uncertainty¿¿ as used in the present formulation are based on hard inequality const... View full abstract»

• ### Introduction to Synthetic Array and Imaging Radars

Publication Year: 1982
| PDF (148 KB)
• ### Communications Network Analysis

Publication Year: 1982
| PDF (148 KB)