scholarly journals A MSWF root‐MUSIC based on Pseudo‐noise resampling technique

2021 ◽  
Author(s):  
M. Johnny ◽  
M. R. Aref
Keyword(s):  
Pseudo Noise

Study of pseudo-noise cw diode laser for ranging applications

1992 ◽  
Author(s):  
Hyo Sang Lee ◽  
Ravi Ramaswami
Keyword(s):  
Diode Laser ◽  
Pseudo Noise

scholarly journals Small All-Range Lidar for Asteroid and Comet Core Missions

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3081
Author(s):  
Xiaoli Sun ◽  
Daniel R. Cremons ◽  
Erwan Mazarico ◽  
Guangning Yang ◽  
James B. Abshire ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
Dynamic Range ◽  
Photon Counting ◽  
Avalanche Photodiode ◽  
Integration Time ◽  
Sample Collection ◽  
Long Distance ◽  
Linear Mode ◽  
Internal Gain ◽  
Pseudo Noise

We report the development of a new type of space lidar specifically designed for missions to small planetary bodies for both topographic mapping and support of sample collection or landing. The instrument is designed to have a wide dynamic range with several operation modes for different mission phases. The laser transmitter consists of a fiber laser that is intensity modulated with a return-to-zero pseudo-noise (RZPN) code. The receiver detects the coded pulse-train by correlating the detected signal with the RZPN kernel. Unlike regular pseudo noise (PN) lidars, the RZPN kernel is set to zero outside laser firing windows, which removes most of the background noise over the receiver integration time. This technique enables the use of low peak-power but high pulse-rate lasers, such as fiber lasers, for long-distance ranging without aliasing. The laser power and the internal gain of the detector can both be adjusted to give a wide measurement dynamic range. The laser modulation code pattern can also be reconfigured in orbit to optimize measurements to different measurement environments. The receiver uses a multi-pixel linear mode photon-counting HgCdTe avalanche photodiode (APD) array with near quantum limited sensitivity at near to mid infrared wavelengths where many fiber lasers and diode lasers operate. The instrument is modular and versatile and can be built mostly with components developed by the optical communication industry.

Dangerous Functions for Feedforward Pseudo-Noise Generators with Memory

1991 ◽  
Vol 12 (1) ◽  
pp. 49-56
Author(s):  
Andrea Paiusco
Keyword(s):  
Pseudo Noise ◽  
With Memory

Analysis and Simulation of a Digital Matched Filter Receiver of Pseudo-Noise Signals

1965 ◽  
Vol 9 (4) ◽  
pp. 264-273
Author(s):  
R. Van Blerkom ◽  
R. E. Sears ◽  
D. G. Freeman
Keyword(s):  
Matched Filter ◽  
Digital Matched Filter ◽  
Pseudo Noise

scholarly journals FPGA Implementation of Pseudo Noise Sequences based on Quadratic Residue Theory

2016 ◽  
Vol 134 (9) ◽  
pp. 10-14
Author(s):  
A. Rajagopal ◽  
K.L. Sudha ◽  
Dundi Ajay
Keyword(s):  
Quadratic Residue ◽  
Fpga Implementation ◽  
Pseudo Noise ◽  
Residue Theory ◽  
Noise Sequences

scholarly journals Method of telecommunication channel performance improvement by complex use of pseudo noise coding sequences

2020 ◽  
Vol 48 (4) ◽  
Author(s):  
Олександр Григорович Плющ
Keyword(s):  
Performance Improvement ◽  
Coding Sequences ◽  
Channel Performance ◽  
Pseudo Noise

Pseudo-Noise Code Shifting Signal for AI Arranged UAV Networking

2020 ◽  
Vol 25 (5) ◽  
pp. 1683-1693
Author(s):  
Deyue Zou ◽  
Jie Liu ◽  
Xinyi Cheng ◽  
Jing Zhang ◽  
Yunfeng Liu ◽  
...  
Keyword(s):  
Pseudo Noise
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