Evaluation Of The Electronic Wide Angle Camera System

James Rachal; Alfred Roberts Jr.

doi:10.1117/12.956206

31 August 1978 Evaluation Of The Electronic Wide Angle Camera System

James Rachal, Alfred Roberts Jr.

Proceedings Volume 0137, Airborne Reconnaissance III; (1978) https://doi.org/10.1117/12.956206
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States

Abstract

The Electronic Wide Angle Camera System (EWACS) enables for the first time the real-time generation of high-resolution, wide-angle (140°), high-speed, low-altitude, tactical aerial imagery and auxiliary data for display at a ground station. The high performance and broad angular coverage are achieved by using a scanning prism and imaging of the scene onto a linear charge-coupled device (CCD). The solid-state, electro-optical recon sensor is suitable for use in high performance manned aircraft or RPV's with its small size (0.7 ft3 ), weight (35 lb) and power (95 W) requirements. The recon sensor demonstrated a bench performance level equivalent to the resolution of a 0.7-foot target at a 1000-foot range for a low-contrast, low-light level condition, while the overall system capability is reduced by a factor of about two due to scan converter limitations. These performance levels were maintained throughout dynamic analyzer and flight testing programs. The EWACS evaluation has validated the system concept and verified that program objectives have been met as demonstrated throughout 14 flights which provided reliable operation and excellent imagery of resolution and tactical targets.

Citation Download Citation

James Rachal and Alfred Roberts Jr. "Evaluation Of The Electronic Wide Angle Camera System", Proc. SPIE 0137, Airborne Reconnaissance III, (31 August 1978); https://doi.org/10.1117/12.956206

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KEYWORDS

Sensors

Video

Charge-coupled devices

Reconnaissance

CCD image sensors

Signal processing

Fourier transforms

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