Flight Tests of the Microwave Landing System Multimode Digital Processor

Warren, John

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Flight Tests of the Microwave Landing System Multimode Digital Processor

1981-01-01
By Warren, John

File Language:

English

Details

Creators:

Warren, John
Corporate Creators:

Federal Aviation Administration Technical Center (U.S.)
Subject/TRT Terms:

CALSPAN Processor Data Processing Equipment Digital Communication Systems Image Fields In Optical Scanning Landing Aids Microwave Landing Systems
Publication/ Report Number:

FAA-CT-80-19
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
Abstract:

Flight tests were performed to order to evaluate four digital airborne processing techniques. Four techniques used for processing Microwave Landing System (MLS) time reference scanning beam (TRSB) signals are: (1) dwell-gate processing (DGP), (2) single-edge processing (SEP), (3) dual-edge processing (DEP), and (4) split gate processing (SPGT). These techniques were flight tested under standard partial orbits, glide slopes, and aircraft shadowing. Overall, the SPGT and DGP techniques resulted to about the same errors. The SEP data were noisier than the DGP but usually had about the same bias. The DEP technique was always inferior to the DGP. Aircraft shadowing errors were excessive for all techniques and should be avoided by operating procedures when an aircraft nears the touchdown region. It is recommended that the DEP algorithm be changed for improved no1.se performance and flight tests be performed using all four processing techniques in a specular multipath environment and under conditions using two azimuth antennas having different beam widths (these tests were not performed because of equipment nonavailability during flight testing).
Format:

PDF
Funding:

075-725-420
Collection(s):

FAA William J. Hughes Technical Center for Advanced Aerospace
Main Document Checksum:

urn:sha-512:a81f213691718471a713cdc90ed98513f52f7fa3f5584e489402783875f99edea74106316831eebc3a7548c3f44679195680432c9347c3383d2dbef47db16436
Download URL:

https://rosap.ntl.bts.gov/view/dot/90486/dot_90486_DS1.pdf
File Type:

[PDF - 1.61 MB ]

File Language:

English

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